Dynalink Wireless LAN Client USB WLL013 - Manual (Page 9)

WLAN PCMCIA Card/USB Adaptor Quick Set-up Guide
If the radio interference source is known, increase the separation between
the wireless computers and the device causing the interference.
Do not share the same AC power socket between the computer and the device
generating the interference.
Stay away from microwave sources (including microwave oven) and large
metal objects.