The low priced LogiLink USB sound card (UA0078) is an ideal choice for usage with Linux. The USB stick is recognized automatically by the Linux kernel (Ubuntu 12.04):
usb 5-2: new full-speed USB device number 7 using ohci_hcd
mtp-probe: checking bus 5, device 7: "/sys/devices/pci0000:00/0000:00:13.0/usb5/5-2"
mtp-probe: bus: 5, device: 7 was not an MTP device
input: C-Media USB Headphone Set as /devices/pci0000:00/0000:00:13.0/usb5/5-2/5-2:1.3/input/input16
generic-usb 0003:0D8C:000C.0009: input,hidraw2: USB HID v1.00 Device [C-Media USB Headphone Set ] on usb-0000:00:13.0-2/input3
The card appears in the Pulse Audiomixer as “Audio Adapter Analog Stereo”.
The USB ID of the stick is 0d8c:0102
Bus 001 Device 010: ID 0d8c:0102 C-Media Electronics, Inc. CM106 Like Sound Device
The stick has on one jack for the connection of a microphone and a second one for the speaker. Additionally, it is equipped with two buttons for volume control.