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![](https://img.alicdn.com/imgextra/i4/14449357/O1CN01M2lNZ32IzYYp2tOCt_!!14449357.png)
![](https://img.alicdn.com/imgextra/i3/14449357/TB2JmHHoyRnpuFjSZFCXXX2DXXa_!!14449357.png)
●If you are interested in some products in our shop, and the pictures on the corresponding page cannot be opened, please refresh a few times. If it still does not display, please contact us. We will send you the same graphic information as the product page for your reference.
●Please open your eyes, take a little patience, read the instructions on the page in detail to understand the condition of the goods(Subject to the content in “product display”), To avoid misunderstandings and disputes.
●All products in this shop(And freight)No bargaining, bargainers, please do not open your mouth, do not waste each other''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s time. Unless you buy multiple pieces at a time, there is a small profit(Those onBuyers who come here are pleased to respect yourself). If you want to understand the product, we patiently answer.
![](https://img.alicdn.com/imgextra/i1/14449357/TB2Vp2xmgxlpuFjSszbXXcSVpXa_!!14449357.png)
Stock brand new Shuangfeiyan machinery(Bowling)Mouse, model: OK-720, 2D double button, there are two interfaces, PS/2 port or serial port\COM port, whichever you want to shoot. The mouse has a color box packaging(due toLong inventory time, the box is a bit old, worn and wrinkled), Unused, more suitable for nostalgic collection…… appreciate the development history of PC, affect your nostalgia complex, and witness the progress of computer technology!
Due to the inventory for many years and several turnovers,Because the mouse is not packaged in a separate plastic bag, the upper shell protrudesContact and rub against the inside of the box, resulting in a little rubbing mark(Not used traces of second-hand goods), Buyers with high fineness requirements, please bypass.
?????????????? A:PS/2 interface, See the introduction below ??????????????
Because the production time and batch are different, the appearance of the mouse box has also changed, and it will be shipped randomly.
In the 1990s, computers began to become popular in China. In those years, people basically used mechanical mice with this structure, which became the epitome of the time in memory. With the advancement of science and technology, mechanical mice were gradually(Optics)Replaced by the mouse. Although the mechanical mouse has been quietly withdrawn from the market for many years, it is still favored by some nostalgic, collectors and people who are accustomed to it.
![](https://img.alicdn.com/imgextra/i3/14449357/TB2OAl1pMxlpuFjSszgXXcJdpXa_!!14449357.jpg)
Regarding the past, many people are obsessed with this past, but they can''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t help but go to …… to collect a product from that year and freeze the memory, it can be regarded as a commemoration of that time. !
![](https://img.alicdn.com/imgextra/i4/14449357/TB2dtpgpSBjpuFjy1XdXXaooVXa_!!14449357.jpg)
![](https://img.alicdn.com/imgextra/i1/14449357/TB2hltWpR0kpuFjSsziXXa.oVXa_!!14449357.jpg)
From the original mouse, mechanical mouse, optical mouse, optical mouse to optical mouse, mouse technology has undergone a long evolution and evolution. There is no doubt that the current optical mouse is our pursuitOne of the ideal types of ……Perhaps, some people are now(Bowling)The mouse sneered and dismissed it, but it is an important technological achievement in the history of the mouse, and it is also the basis for the improvement of the mouse.
![](https://img.alicdn.com/imgextra/i1/14449357/TB2k2WapHtlpuFjSspoXXbcDpXa_!!14449357.jpg)
![](https://img.alicdn.com/imgextra/i4/14449357/TB2mbimpMFkpuFjSspnXXb4qFXa_!!14449357.jpg)
machinery(Bowling)The huge impact of the mouse on the history of IT is obvious to all. With the advancement of technology, it has now stepped off the peripheral stage and gradually faded out of people’s field of vision……itCarrying a memory and a feeling, its collection value cannot be ignored. This is the main reason why many computer enthusiasts and enthusiasts pursue it.
![](https://img.alicdn.com/imgextra/i3/14449357/TB2.JpgpSBjpuFjy1XdXXaooVXa_!!14449357.jpg)
![](https://img.alicdn.com/imgextra/i2/14449357/TB2aTNCpMNlpuFjy0FfXXX3CpXa_!!14449357.jpg)
With the passage of time, we will all grow up or get old, but the things that have been used, have accompanied us, and have given us joy have gradually been sealed by history and want to keep Live it, we might as well choose to treasure it……
![](https://img.alicdn.com/imgextra/i4/14449357/TB2GvWapHtlpuFjSspoXXbcDpXa_!!14449357.jpg)
the bottom of the mouse:
![](https://img.alicdn.com/imgextra/i2/14449357/TB2ez5cpR4lpuFjy1zjXXcAKpXa_!!14449357.jpg)
![](https://img.alicdn.com/imgextra/i1/14449357/TB2EgpipMJkpuFjSszcXXXfsFXa_!!14449357.jpg)
We still have a few second-handofThis modelmouse(PS/2 port),The color is about 7—80% new, the shell and buttons are obviously shiny(Shine is the trace of shiny after long-term use), The price is much cheaper.
If the PS/2 port of your motherboard is damaged or there is no PS/2 port, please purchase the PS/2 port to USB port adapter cable as shown in the picture below in your local or our shop(Built-in chip, no need to drive, plug and play. Please read the description of this line and use it with caution), You can use it on the USB port.
Transfer line link:http://item.taobao.com/item.htm?spm=686.1000925.1000774.66.acijkd&id=2292223575
![](https://img.alicdn.com/imgextra/i4/14449357/T2hnxPXCBaXXXXXXXX-14449357.jpg)
Part of the sales records of this product organized by our shop(To protect the privacy of buyers, ** is used in the middle of the buyer''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s name ID. Real sales, no fiction):
◆◆◆◆Sold (Type A, PS/2 interface 1 item)2020-07-01 Buyer: Huan**
◆◆◆◆Sold (Type A, PS/2 interface 1 piece)2019-04-27 Buyer: w**5
◆◆◆◆Sold (Used A PS/2 port, there are signs of use 1)2019-04-15 Buyer: l**6
◆◆◆◆Sold (Type A, PS/2 interface 3 pieces)2018-06-26 Buyer: l**l
◆◆◆◆Sold (Type A, PS/2 interface 2 pieces)2018-06-10 Buyer: Tao**9
◆◆◆◆Sold (Type A, PS/2 interface 1 piece)2018-02-01 Buyer: Me**6
◆◆◆◆Sold (Type A, PS/2 interface 1 piece)2018-01-20 Buyer: Aviation**2
◆◆◆◆Sold (Type A, PS/2 interface 1 piece)2016-10-21 Buyer: x**8
◆◆◆◆Sold (Type A, PS/2 interface 1 item)2016-09-20 Buyer: x**8
◆◆◆◆Sold (Type A, PS/2 interface 1 item)2016-01-24 Buyer: d**7
◆◆◆◆Sold (Type A, PS/2 interface 2 pieces)2015-04-21 Buyer: Jiang**1
◆◆◆◆Sold (Type A, PS/2 interface 1 item)2015-04-13 Buyer: Fat** dishes
◆◆◆◆Sold (Type A, PS/2 interface 1 item)2015-03-25 Buyer: m**8
◆◆◆◆Sold (Type A, PS/2 interface 3 pieces)2014-12-30 Buyer: c**物
◆◆◆◆Sold (Type A, PS/2 interface 1 item)2014-03-31 Buyer: I wish** 8
◆◆◆◆Sold (Type A, PS/2 interface 2 pieces)2014-02-27 Buyer: w**5
?????????????? B:COM port\Serial port, See the introduction below ?????????????
Because the production time and batch are different, the appearance of the packaging box is different, and it will be shipped randomly.
This kind of serial port\COM portmouse,As production has been discontinued for many years, it has become increasingly difficult to find.nowsomeSome professional equipment or old equipment in the medical industry and enterprise factories and mines are still used……
![](https://img.alicdn.com/imgextra/i3/14449357/TB2dSInmhrI8KJjy0FpXXb5hVXa_!!14449357.jpg)
![](https://img.alicdn.com/imgextra/i3/14449357/TB2I7kUmf2H8KJjy1zkXXXr7pXa_!!14449357.jpg)
these years,We have handled hundreds of mechanical mice, tens of thousands, and we have accumulated a lot of product knowledge and experience. Now, let youSee what is the original OK-720 with COM port:
![](https://img.alicdn.com/imgextra/i3/14449357/TB2_0fZmf2H8KJjy0FcXXaDlFXa_!!14449357.jpg)
![](https://img.alicdn.com/imgextra/i2/14449357/TB2p4vumlDH8KJjSszcXXbDTFXa_!!14449357.jpg)
![](https://img.alicdn.com/imgextra/i4/14449357/TB2nZylk7fb_uJjSsrbXXb6bVXa_!!14449357.jpg)
What we sell is the original Shuangfeiyan OK-720 mouse with COM port, not the kind of modified OK-720 with PS/2 port(Including ways to change the mouse connection, change the circuit wiring and change the main control chip),Stability and compatibility are more assured.Support factory verification.
![](https://img.alicdn.com/imgextra/i2/14449357/TB2d9v4mlHH8KJjy0FbXXcqlpXa_!!14449357.jpg)
Due to different production times and batches, components and layouts sometimes change,This is another version of Shuangfeiyan OK-720 with COM port:
![](https://img.alicdn.com/imgextra/i3/14449357/TB2_6cUmgDD8KJjy0FdXXcjvXXa_!!14449357.jpg)
![](https://img.alicdn.com/imgextra/i4/14449357/TB2xxTimlfH8KJjy1XbXXbLdXXa_!!14449357.jpg)
We also have a small amount of second-hand B models(Serial port\COM port), The color is about 80% new, some scratches caused by improper preservation and not serious marks of use(The use time is not long, and the keys and the shell are basically not shiny. Shine is a long-term practical and shiny trace), The price is much cheaper, buyers who pay attention to practicality and pursue cost performance can consider it.
Part of the sales record of this product organized by our shop(To protect the privacy of buyers, ** is used in the middle of the buyer''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s name ID. Real sales, no fiction):
◆◆◆◆◆Sold (Type B, serial port\COM port 1 item)2019-08-07 Buyer: w**1
◆◆◆◆◆Sold (Used B COM port, there are signs of use 1 item)2019-05-14 Buyer: Lai**8
◆◆◆◆◆Sold (Type B, serial port\COM port 2 pieces)2018-10-14 Buyer: t**7
◆◆◆◆◆Sold (Type B, serial port\COM port 1 item)2018-09-27 Buyers: 7**letter
◆◆◆◆◆Sold (Type B, serial port\COM port 2 pieces)2018-09-04 Buyer: h**2
◆◆◆◆◆Sold (Type B, serial port\COM port 2 pieces)2017-08-15 Buyer: x**7
◆◆◆◆◆Sold (Type B, serial port\COM port 4 pieces)2017-04-17 Buyer: z**t
◆◆◆◆◆Sold (Type B, serial port\COM port 1 item)2016-06-24 Buyer: Xiang**lin
◆◆◆◆◆Sold (Type B, serial port\COM port 1 item)2016-03-23 ??Buyer: x**q
◆◆◆◆◆Sold (Type B, serial port\COM port 1 item)2016-03-09 Buyer: Xiao**8
◆◆◆◆◆Sold (Type B, serial port\COM port 1 item)2015-05-07 Buyer: Jiang**1
◆◆◆◆◆Sold (Type B, serial port\COM port 1 item)2015-03-12 Buyer: c**g
◆◆◆◆◆Sold (Type B, serial port\COM port 8 items)2014-12-05 Buyer: Years old** 8
◆◆◆◆◆Sold (Type B, serial port\COM port 7 pieces)2014-08-18 Buyer: Chen**5
◆◆◆◆◆Sold (Type B, serial port\COM port 15 pieces)2014-08-13 Buyer: Chen**5
◆◆◆◆◆Sold (Type B, serial port\COM port 1 item)2014-08-01 Buyer: Chen**5
◆◆◆◆◆Sold (Type B, serial port\COM port 1 item)2014-07-02 Buyer: Xiang**lin
machinery(Bowling)After all, the mouse is a product many years ago. Due to the technology and technical level at that time, most mechanical mice use 400dpi---520dpi resolution.Higher 800dpi is rare. The African tree snake mechanical mouse with more than 2000 dpi produced by Razer is a special case…… so the performance index of mechanical mouse is generally not as high as the current optical and laser mouse.(Optoelectronic and laser mice are all starting at 800dpi or above, and the products above the mid-range often have thousands or even tens of thousands of dpi, but too high dpi is meaningless.), Please be mentally prepared for buyers. Software such as SetPoint or IntelliPoint can be downloaded from the Internet for adjustment and acceleration, which can approach or reach the level of a general optical mouse. We do not recommend using a mechanical mouse with a high-resolution or large-size monitor, because the mouse cursor will move slowly and the range of movement will be small. The relationship between the mouse and the game and the monitor, please check on the Internet for related knowledge, not repeat it.
buy machinery now(Bowling)The mouse is nothing more than three situations: nostalgia, collection or use(Although its performance is low, many people still like its feel. If you use it, we recommend choosing a rollerAfter all, everyone is used to the convenience of the scroll wheel. As long as the interface corresponds, the mechanical mouse can work normally in systems below win7. We have not tested higher operating systems and cannot be determined.). Due to its structure and principle, the mechanical mouse does not have frame skipping and color blindness. In addition, mechanical mice can work normally on smooth glass or mirror surfaces, while current optical and laser mice cannot …… every time a mechanical mouse is used, it is necessary to clean up the dirt on the roller ball and wheel shaft. , It only takes a few minutes to spend a long time on the computer, just to rest and relax.
![](https://img.alicdn.com/imgextra/i3/14449357/TB2bojPoUlnpuFjSZFjXXXTaVXa_!!14449357.jpg)
![](https://img.alicdn.com/imgextra/i1/14449357/TB2SkYPml8lpuFjy0FnXXcZyXXa_!!14449357.png)
●Due to the impact of the on-site lighting and the difference in shooting equipment, it is inevitable that there is a slight color difference between the photos and the actual objects. I hope everyone will understand. Buyers who mind please go around.
●When you pick up or receive the goods, please open the package in the presence of the staff of the freight, post office or courier company and check whether the appearance of the goods is damaged. If there is no objection, the appearance will be deemed intact; otherwise, please refuse Sign for.
●Buyers who are eagerly waiting or arriving within a limited time should explain before the shoot. The buyer paid, we will test, pack, and ship as soon as possible, but the goods leave us to express or freight(In transit)We can’t control it. If there are delays or damages during transportation, we will verify, negotiate with courier or freight, handle …… the buyer who urges or even asks for a refund halfway, please see Look at the current "Postal Law"(We can provide a copy for your reference), Figure out how long it will be a delay, don’t be presumptuous(It’s not because you are in a hurry).
●We test everything before shipment(Individuals who do not have the test environment or conditions, we will inform), In case the buyer finds that the goods are faulty or problematic when receiving the goods, please communicate with us in time. If necessary, send the goods back and we will test again to make sure ——If there is a quality problem in the item itself, we provide Return and exchange and bear the round-trip postage; if the buyer''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s description of the fault or problem is false or maliciously exaggerated for the purpose of bargaining or returning the goods, the round-trip postage will be the responsibility of the buyer.
●In the event of a return or exchange, the buyer must keep the goods intact(Don’t create another trace of use to affect secondary sales)Please keep the attached packaging and fillings as they are to ensure the safety of the returned goods during transportation. The goods are affixed with the labels we filled in(Fragile stickers), If there are signs of broken labels, unauthorised opening of the shell, etc., we will cancel the return service.
![](https://img.alicdn.com/imgextra/i4/14449357/TB2ZDO9orJmpuFjSZFwXXaE4VXa_!!14449357.png)