HP RSVLD-0506 (1150-7910)
For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.
HP 802.11b/g WLAN Module
The regulatory model cited by the FCC documents is RSVLD-0506]. However, the device is more commonly identified by its HP P/N of 1150-7910.
This board is using the Broadcom BCM94320LPH reference design.
There appear to be multiple USB connectors on the board for the device.. one of which is a Mini B connector (which may be omitted on some [but not all] production models).
There is a MAC label with an 00:10:18 (Broadcom) OUI in the FCC photos.