| VPN | IPSec, PPTP, L2TP Pass-through |
| Certification | RoHS Certification, CE Certification |
| Other Features | VC-based multiplexing, ATM Forum UNI3.1/4.0 PVC Up to 8 PVCs, Logical Link Control (LLC) encapsulation, Bridged and routed Ethernet encapsulation, Transparent Bridging, Network Protocols: Ethernet to ADSL Self-Learning |
| USB | USB 1.1 |
| Number of USB Ports | 1 |
| LAN | RJ-45 |
| WAN | RJ-11 |
| Antennae | Internal |
| Number of LAN ports | 1 |
| Number of WAN ports | 1 |
| Depth | 120 mm |
| Width | 105 mm |
| Height | 32 mm |
| Color | Black |
| Type | Wired With Modem |
| Brand | D-Link |
| Model | DSL-2520U |
| In The Box | 1 Router |
| Part Number | DSL-2520U |
| LED Indicator | Power, Status, DSL Link, Ethernet |
| Frequency | 2.4 GHz |
| Temperature | 0DegC - 40DegC degree C |
| Operating Humidity | Non-condensing Storing: 5 % - 95 % |
| Power Supply | DC 5 V/1 A |
| Firewall | NAT, Stateful Packet Inspection (SPI), MAC Filtering, URL Content Filtering, Denial of Service Prevention, Intrusion Detection, |
| Other Security Features | Internet Protocol Control Protocol (IPCP), PPP Authentication Protocol (PAP), Authentication Protocol (CHAP) , Internet Control Message Protocol (ICMP) |
| LAN/WAN | 10/100 |
| Wireless Speed | 150 Mbps |
| Operating System | Windows 98 SE, Windows ME, Windows 2000, Windows XP, Windows Vista |