Chicony Electronics Co. XiaoMi USB 2.0 Webcam (Chicony-made)

Should workNot sold separately

Its measured bandwidth table says a table's worth fit on one USB port, but nobody here has run it.

Drops to 192 bytes per microframe, so up to 32 fit on one USB port at that setting.

Bandwidth table read from a real `lsusb -v` dump. 11 isochronous settings, smallest 192 bytes per microframe. Seen on 143 machines in the dump corpus. linux-hardware.org: 133 installs; 'works' on Mint 19.2 and Fedora 38, 1 'failed' on Fedora 31, rest 'detected'. Chip supplier is Chicony (vendor ID 04f2 belongs to Chicony, not Xiaomi), badged as a XiaoMi product.

USB ID: 04f2:b59a
Fit on one USB port: 32 (at its lowest bandwidth setting)
Bandwidth floor: 192 bytes per microframe (from a real descriptor dump)
Every bandwidth setting it offers: 3060, 2880, 1984, 1600, 1280, 944, 800, 640, 512, 384, 192 bytes per microframe
Seen on: 143 real machines in the dump corpus
Hardware probes: 133
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/Notebook/Others/Others/Others/C648D

More from Chicony Electronics Co.

04f2:b64f48 per portIntegrated Camera (1280x720@30)48 per portIntegrated HP HD Webcam48 per port04f2:b47f48 per port04f2:b52b48 per portCNF9055 Toshiba Webcam48 per port

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.