Use your DB9 serial device with your computer with this convenient 3' USB-A to RS-232 / DB9 Serial Null Modem Adapter Cable from Rocstor.

It includes USB-A male connector on one end and an RS-232 / DB9 serial female connector on the other, allowing you to transfer data between compatible devices. This cable also has a COM retention feature that allows it to keep the same COM port value, even when the cable is disconnected and the computer is rebooted. The integrated FTDI chipset supports additional customization and advanced features in addition to providing expanded compatibility with Windows, Windows CE, macOS, and Linux devices.

USB-A Male Connector    RS-232 / DB9 Serial Female Connector    FTDI USB UART Chip    Works with Windows, macOS & Linux

Related Questions and Answers

Q: 1. Does it auto focus if half pressed?

A: Yes. It also will hold the shutter open as long as you need it in bulb mode, or fire of as many shots as you need in action mode, if you keep it depressed. It acts exactly the same as your shutter release button on the camera itself.

Q: 2. I have a rebel t5 and just purchased a external flash. But it uses the same port. Can I use a splitter for two things

A: I got a external flash that don't need the 3.5 jack port. I got the wrong camera I was thinking.

Q: 3. Compatible with 5D Mark II?

A: No, for the Canon 5D MKII you need the RS-80N3 remote switch.

Q: 4. Can this be used to read and write a 64 pin ATA flash card

A: No, that cannot be used to read and write a 64 pin ATA flash card.

Q: 5. Does this have a lock feature to keep the shutter pressed for extended periods of time? Or does it need to be physically held down by the operator for the duration of the exposure?

A: Yes. You press the button with your thumb and slide it forward in the lock position. Shutter will remain open until you manually release it.

Q: 6. I'm looking for a remote for my T5 rebel? I bought the pro master , I can not get it to work.

A: I'm not familiar with the plug set up for the T5. The RS80N3 will not work on my Canon 60D, but it works fine on my 6D full frame camera. The plug is much

Q: 7. Will this work with the Fuji X-T30?

A: No, the Fuji X-T30 camera is not compatible with the Vello RS-F1II Wired Remote. Please check out the Vello RS-C1II Wired Remote. https://www.bhphotovideo.com/c/product/765659-REG/Vello_RS_C1II_RS_C1II_Wired_Remote_Switch.html

Q: 8. Could this be used with a power bank with a USB-C port with PD?

A: Yes, the Blind Spot Gear USB-C to Canon LP-E17 Adapter is compatible with a power bank with USB-C and PD. The PD power bank should offer 9 volts.

Q: 9. will this battery fry my a7iv?

A: The Blind Spot Gear USB-C to Sony NP-FZ100 Adapter is compatible with the Sony a7 IV Mirrorless Camera.

Q: 10. A newbie wants to know if this will work with the 5d

A: Yes, the Canon Remote Switch RS-80N3 would be compatible for use with all versions of the Canon EOS 5D-series DSLR camera (including the original Canon EOS 5D, the 5D Mark II, 5D Mark III, 5D Mark IV, 5DS, and 5DS R DSLR cameras).