===== Trendnet TPE-2840WS/A V2.1R =====

The switch is a 24 + 4-port Gigabit L2 switch with up to 185 Watts of PoE+ power on the 24 Gigabit ports.


==== Hardware ====
  * [[rtl838x|RTL8382M]] SoC
  * Macronix MX25L25635F 32MB flash
  * Nanya NT5CC256M8IN-D1 256MB DDR3 SDRAM
  * Realtek RTL8231 GPIO extender/LED driver
  * Nuvoton ARM microcontroller
  * Broadcom BCM59121B0KMLG PoE controllers

4 Uplink ports are SFP cages which support 1000 Base-X mini GBIC modules shared with 4 RJ-45 ports

Power is supplied via a 100-240V Type C13 connector.

A unpopulated serial header is found at J12. Pins are Vcc(3.3V, Square), TX, RX and GND. Serial connection is via 115200 baud, 8N1.

There appears to be a unpopulated 14-pin JTAG available at J3.  

==== Pin-outs ====

=== Soc UART ===
  * J12.1: VCC, 3.3V (square pad)
  * J12.2: TX
  * J12.3: RX
  * J12.4: GND

=== Nuvoton SWD ===
J1 on the POE control board appears to be an SWD header to program the Nuvoton Chip.

==== Board details ====
{{wiki:trendnet:trendnet_tpe-2840ws-a_v2.1r.jpeg?200| Interior}}
{{wiki:trendnet:trendnet_tpe-2840ws-a_v2.1r_board.jpeg?200| Main board top}}
{{wiki:trendnet:trendnet_tpe-2840ws-a_v2.1r_poe.jpeg?200| PoE board}}

===== Firmware =====

The switch ships with a bootloader based on Realtek's SDK for RTL83xx SoCs and Linux 2.6 based on Realtek's SDK. It has a web interface for all management functions.
The board identifies as RTL8382M_8218B_INTPHY_8218B_8214FC_DEMO (Port Count: 28) for the Realtek SDK.

==== OpenWrt Support ====
Since the hardware appears to be identical to the [[DGS-1210-28P]] but with 256MB of RAM instead of 128MB and a different power supply, support with similar features should be a matter of providing a modified DTS file. 

===== References =====
  * [[https://www.trendnet.com/products/product-detail?prod=270_TPE-2840WS | Product page ]]