USA-19hs serial adapter

USB ID 06cd:0121 · Keyspan

VendorKeyspan
Vendor ID06cd
Device ID0121
Windows hardware IDUSB\VID_06CD&PID_0121
Linux modaliasusb:v06CDp0121
Linux driverkeyspan

Frequently asked questions

Which device has USB ID 06cd:0121?

USB ID 06cd:0121 is “USA-19hs serial adapter” made by Keyspan (vendor ID 06cd, device ID 0121).

Which Linux driver supports USA-19hs serial adapter?

In Linux kernel 6.12 the device is bound to the driver keyspan (source under drivers/usb/serial). The driver is normally loaded automatically when the device is detected.

How do I check whether USA-19hs serial adapter is in my computer?

On Linux, lsusb -d 06cd:0121 shows the device if it is present. On Windows, open Device Manager, then Properties → Details → Hardware Ids; it appears as USB\VID_06CD&PID_0121.

How do I see which driver is currently in use?

lsusb -t prints the device tree with the bound driver (Driver=…) for each interface.

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