TP-Link TL-SG2008
The switch is a 8 Gigabit L2 switch.
Hardware
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Winbond W25Q256JVFQ 32MB NOR flash
Samsung K4B2G1646F-BYMA 256MB DDR3L SDRAM
Realtek RTL8231 GPIO extender/LED driver
TI TPS23753 802.3 PoE Interface & Isolated Converter Controller
Power is supplied via a 12V 1A barrel connector or 802.3af/at via port 8.
Pinouts
Soc UART
The UART is broken out to unpopulated header J11:
References