| Type | Desktop wireless PCI adapter |
| Bus | 32-bit PCI 2.2 |
| Wi-Fi standards | IEEE 802.11g and 802.11b |
| Frequency | 2.4 GHz; listed range 2.4–2.462 GHz |
| Maximum link rate | 54 Mbps under standard 802.11g; up to 108 Mbps with compatible D-Link Xtreme G equipment |
| Compatibility | 802.11b devices; enhanced 108 Mbps mode requires compatible D-Link gear |
| Security listed | 64-/128-bit WEP, 802.1X, WPA |
| Antenna | Detachable dipole, reverse-SMA connector |
| Transmit power | 15 dBm ±2 dB |
| Dimensions | 114.3 × 54 × 8.7 mm |
| Weight | 55 g |
| Operating temperature | 0–55 °C |
| Humidity | Up to 95%, non-condensing |
| Status | Discontinued; D-Link lists the DWL-G520+ as end-of-life |