Logitech C270 HD Webcam
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.
Logitech firmware quirks are family-wide; expect the C920 caveats until measured. Bandwidth table read from a real `lsusb -v` dump. 11 isochronous settings, smallest 192 bytes per microframe. Seen on 2,846 machines in the dump corpus. 4 different tables were reported for this ID, which usually means it enumerates differently on USB 2 and USB 3 hosts. USBTreeView dump in ESP-IDF UVC test fixtures (lsusb-format device descriptor header, idVendor/idProduct fields).
- USB ID
046d:0825- 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, 2688, 1984, 1600, 1280, 944, 800, 640, 512, 384, 192 bytes per microframe
- Resolution seen
- 1280x720
- Seen on
- 2,846 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/All%20In%20One/Acidanthera/iMac17/i
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.