"WN5301D", "P/N: 14153011"????, "REV:R0B" appears to be silkscreened on the board in the FCC photos.
This card was designed to be used as an upgrade card for AP-2000s to allow them to support 802.11a.
There are two internal MMCX connectors hidden behind the plastic cover (which the larger antenna connects into).
Additional specifications, per the FCC manual, follow...
Typical Receiver Sensitivity w/ 11a rates (more)
- -85 dBm @ 6M (BPSK)
- -84 dBm @ 9M (BPSK)
- -83 dBm @ 12M (QPSK)
- -81 dBm @ 18M (QPSK)
- -78 dBm @ 24M (16-QAM)
- -74 dBm @ 36M (16-QAM)
- -69 dBm @ 48M (64-QAM)
- -65 dBm @ 54M (64-QAM)