Yes, RT2070 seems to be similar to RT2870, but without "802.11n" support. 'A5AGU9x.sys' yep, it's Atheros driver, WUA-2340 model number has been recycled. I'm trying to find oldest ralink driver for RT2870 (found 1.4.1.0), but while it's NDIS5.0 and have "$Chicago$" signature, it doesn't have any W9x entries in inf. Funny enough, I specialy bought adapter without 802.11n in hope it will work with W98