Question 1

Is this cable compatible with Windows 8.1 ?

Accepted Answer

I don't know, I only have Win 7 machines, but since they are just connector cables, as long as your equipment has the right ports, it should work for you.

Question 2

Does it compatible with win 8 and can be used for dumping hex codes in microcontrollers.??

Accepted Answer

It is compatible with Windows 8 and 8.1. There are 8 and 8 x64 specific drivers for it.  And it can be used for that purpose.  I use an Ultrabook for work and I usually use the adapter for Cisco console connections but I have used it for a variety of other purposes. Although, I would suggest using an adapter like the ATEN UC232A instead. It isn't build quite as flimsily and the driver tends to crash less in Windows 8. The StarTech adapter tends to stop responding on the USB COM port after half an hour or so or the driver will crash. That usually just means you have to unplug it and plug it back in but when my YOGA 2 still had the Lenovo shipped image on it instead of the Windows 8.1 install after I wiped it it occasionally would blue screen. Hope this helps.

- Josh

Question 3

I have an old Graphtec plotter that I am trying to connect to a pc of approximate age compatibility (windows 7).  The 40 pin parallel connecter cable to usb doesn't "appear" in the device menu of the software I am running. There are 25 pin and 9 pin ports on both.
I understand the cable comes with a driver disc ? I want to try whatever is best. What do you recommend?

Accepted Answer

You might be in luck since Graphtec seems to offer Windows 7 drivers. I wasn't able to get this cable to work with my old Okidata plotter printer. Nothing was ever recognized no matter what I did, but that was because Okidata did not offer any drivers for Win 7. I don't remember that the cable came with a CD, though. The cable is well made. Wish I could be more help.

Brand	StarTech.com
Model	ICUSB232DB25
Type	Data Transfer Cable
Type	Cable Connectors
Color	Black

Length	3 ft.
Connector Number	2
Connector Detail	External Ports: 1 - DB-25 (25 pin; D-Sub) Male External Ports: 1 - DB-9 (9 pin; D-Sub) Male
Terminal Gender	Male to Male
Specifications	Interface: USB 2.0 Ports: 1 Product Weight: 2.47 oz [70 g] Serial Protocol: RS-232 Maximum Data Transfer Rate: 250 Kbps Data Bits: 4, 5, 6, 7, 8 Stop Bits: 1, 1.5, 2 FIFO: 512-byte bi-directional buffer Parity: None, Even, Odd, Mark, Space Flow Control: None, Xon/ Xoff, Hardware Bus Type: USB 2.0 Connector Type(s): 1-USB A (4 pin) Male Humidity: 0~90% RH Operating Temperature: 0ºC to 60ºC (32ºF to 140ºF) Storage Temperature: -20ºC to 80ºC (-4ºF to 176ºF) Chipset ID: Prolific-PL2303HXD Microsoft WHQL Certified: Yes OS Compatibility: Windows 2000/ XP(32/64bit)/ Server 2003(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)/ Server 2008 R2, MAC 10.1.x and up(32 bit), and Linux Windows XP Embedded, CE 4.2/ 5.2, Windows Mobile 5/ 6, and PocketPC 2003

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StarTech.com ICUSB232DB25 USB to Serial Adapter - 3 ft / 1m - with DB9 to DB25 Pin Adapter - Prolific PL-2303 - USB to RS232 Adapter Cable

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Item#: 9SIA6ZPK9W7553