The TP-LINK TF-5239 card connects a laptop to an Ethernet network via an RJ-45 port. It supports 10/100 Mbps speeds, auto-negotiation, and automatic detection of Full-Duplex or Half-Duplex mode.

It connects to the network via a LAN cable, and its Plug-and-Play functionality makes the card easy to use. It features an LED indicator for connection and activity.

• Card type: 32-bit CardBus/PCMCIA
• Interface: CardBus
• Port: 10/100 Mbps RJ-45
• Connector: 68-pin
• Transmission speed: 10/100 Mbps in Half-Duplex and 20/200 Mbps in Full-Duplex
• Auto-negotiation: 10/100 Mbps
• Flow control: IEEE 802.3x in Full-Duplex
• Standards: IEEE 802.3, 802.3u, 802.3x
• Protocols: CSMA/CD, TCP/IP
• Network media: 10BASE-T with Category 3, 4, or 5 UTP and EIA/TIA-568 100 Ω STP; 100BASE-TX with Category 5 or 5e UTP and EIA/TIA-568 100 Ω STP
• Maximum cable length: 100 m
• LED indicator: Connection and activity
• Operation: Plug-and-Play
• Compatible operating systems: NetWare 3.x, 4.x, 5.x, Windows 98/Me/NT/2000/XP/Vista, Linux
• Certifications: FCC, CE
• Operating temperature: 0–40 °C
• Storage temperature: -40–70 °C
• Operating humidity: 10%–90%, non-condensing
• Storage humidity: 5%–90%, non-condensing