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The adapter seems to work without a powered USB hub, but according to the<br />
specifications it can draw up to 190 mA, so there might be stability issues if additional<br />
power is not provided.<br />
Problem Ethernet adapters<br />
▪ Axago<br />
▪ Axago ADE-X1 10/100 Ethernet Adapter (usb: 9710:7830 driver:mcs7830).<br />
Adapter working about 10 minutes without problem, but after that kernel write<br />
error message to dmesg and no packet is received. Needed to unplug and plug<br />
USB again. Tested with and without powered USB hub.<br />
USB Sound <strong>Card</strong>s<br />
You will usually want the alsa package for sound. In the Debian image for Raspberry Pi<br />
(and possibly other distributions) USB sound cards are prevented from loading as the first<br />
sound card, which can be an annoyance if it's the only device you have. To disable this<br />
behaviour edit /etc/modprobe.d/alsa-base.conf and comment out the last<br />
line; options snd-usb-audio index=-2 . If you are not user pi you may need<br />
to add your username to the audio group thus: sudo adduser yourusername<br />
audio (user pi usually belongs to this group anyway).<br />
▪ Creative<br />
▪ Sound Blaster Play! (http://asia.creative.com/products/<br />
product.asp?category=1&subcategory=207&product=17892)<br />
▪ Daffodil<br />
▪ USB Sound Adapter US01 (http://www.amazon.co.uk/gp/product/B002FI7GWK/<br />
ref=oh_details_o03_s00_i00) . Tested with low-cost headphone/microphone set<br />
via audacity (See notes at cpmspectre.pwp.blueyonder.co.uk/raspberry_pi/<br />
MoinMoinExport/DaffodilUSBSoundAdapter<br />
(http://www.cpmspectre.pwp.blueyonder.co.uk/raspberry_pi/MoinMoinExport/<br />
DaffodilUSBSoundAdapter.html) ).<br />
▪ Edirol<br />
▪ UA-1A (http://www.roland.com/products/en/UA-1A/)<br />
▪ Hercules<br />
▪ Gamesurround Muse XL (Pocket LT3) (http://www.hercules.com/fr/Cartes-Son/<br />
bdd/p/123/gamesurround-muse-xl-pocket-lt3/)<br />
▪ Logilink<br />
▪ UA0053 USB Soundcard with Virtual 3D Soundeffects LogiLink<br />
(http://www.logilink.de/showproduct/UA0053.htm?seticlanguage=en)<br />
▪ NuForce uDAC-2