The TP-Link TL-WR840N is an entry-level, dual-band (2. 4 GHz single-band) wireless router designed for small home and office networks. It is part of TP-Link's classic "N" series, focusing on providing reliable basic connectivity, essential features, and ease of use at a very affordable price point. It is ideal for light internet usage such as web browsing, email, and standard-definition video streaming. ---Technical Specifications1. Hardware SpecificationsCategory SpecificationModel TP-Link TL-WR840N (Note There are multiple hardware versions, e. g., V1 to V6, with minor internal differences)CPU/Processor System-on-a-Chip (SoC) specific model varies by hardware version. Typically a single-core MIPS-based processor. Clock Speed 500 MHz (Approximate, varies by hardware revision)RAM 16 MB or 32 MB (DDR1 or SDRAM, depending on hardware version)Flash Memory 2 MB or 4 MB (For firmware storage)Wireless Standards IEEE 802. 11n, IEEE 802. 11g, IEEE 802. 11bWireless Frequency Band 2. 4 GHz OnlyWireless Signal Rate Up to 300 Mbps (Theoretical maximum under ideal conditions). This is achieved using a 2x2 MIMO (Multiple Input, Multiple Output) configuration with 40 MHz channel bandwidth. Antennas 2 x Fixed Omni-Directional AntennasAntenna Gain 5 dBi eachEthernet Ports 5 x 10/100 Mbps Auto-MDIX Ports 1 x WAN Port (Internet In) 4 x LAN Ports (Local Devices)Button Interfaces Reset Button WPS (Wi-Fi Protected Setup) Button Wireless On/Off ButtonLED Indicators Power, System, WLAN, WAN, LAN (1-4), WPSPower Supply 9V DC, 0. 6A (Input 100-240V50/60Hz)Dimensions (W x D x H) 6. 5 x 4. 3 x 1. 3 in. (165 x 108 x 33 mm)---2. Wireless & Network FeaturesCategory SpecificationWireless Security 64/128-bit WEP WPA-PSK / WPA2-PSK WPA/WPA2-Enterprise (802. 1x) Wireless MAC Filtering SSID Broadcast Enable/DisableWPS (Wi-Fi Protected Setup) Yes, via physical button for quick, secure client connection. Operating Modes Wireless Router Mode Default mode for sharing an internet connection. Access Point (AP) Mode Converts a wired network to wireless. WDS (Wireless Distribution System) Bridge Wirelessly connects two wired networks. WDS with AP Combines bridging and access point functions. Wireless Functions Enable/Disable Wireless Signal Multiple SSIDs (Up to 3) Wireless Client List Wireless StatisticsWAN Connection Types Dynamic IP (DHCP) Static IP PPPoE (Common for DSL connections) PPTP (Less common) L2TP (Less common)DHCP Server Yes, with support for Address Reservation, Client List, and Static DHCP. ---Performance & Real-World Usage Notes Actual Speeds The "300 Mbps" is a theoretical radio link speed. Real-world wired-to-wireless throughput typically peaks at around 80-110 Mbps for local transfers and is limited by the internet connection speed.