All 4,600 webcams

Arkmicro Arkmicro Technologies Inc.

Don't buyOne bandwidth setting

Its own USB descriptors rule it out for a multi-camera rig.

Offers a single bandwidth setting at 3000 bytes per microframe, so only 2 fit on one USB port and the rest go dark. Not a camera to build a table on.

Arkmicro Technologies Bandwidth table read from a real `lsusb -v` dump. 1 isochronous setting, smallest 3000 bytes per microframe. Seen on 17 machines in the dump corpus. 2 different tables were reported for this ID, which usually means it enumerates differently on USB 2 and USB 3 hosts. UVC_QUIRK_PROBE_DEF: device does not support GET_DEF (default) on the Probe control; driver skips asking for defaults and uses GET_CUR instead

USB ID
18ec:3290
Fit on one USB port
2 (at its lowest bandwidth setting)
Bandwidth floor
3000 bytes per microframe (from a real descriptor dump)
Every bandwidth setting it offers
3000 bytes per microframe
Seen on
17 real machines in the dump corpus
What backs this
Its bandwidth table was read out of a real USB descriptor dump from somebody's machine. We have never held this camera, but we know exactly how much of a USB port it reserves.
Source
https://raw.githubusercontent.com/linuxhw/LsUSB/master/Desktop/ASRock/N68/N68-S/F1F109EC97
More from Arkmicro

Part of the Poker Panel webcam database: 4,600 models, with the USB bandwidth numbers that decide how many fit on one port. See the kit we ship.