Teardown of TRENDnet TEG-30284 Switch

TRENDnet is a network equipment manufacturer founded in 1988, with its headquarters in Silicon Valley, USA, and multiple subsidiaries in Europe and America. It develops and sells wired/wireless routers, network switches, fiber transceivers, wireless access points, and provides network security solutions and network deployment services.

To further understand TRENDnet’s products, Moduletek Laboratory purchased a TRENDnet TEG-30284 switch. A simple teardown and analysis is provided below to showcase its internal structure.

official description of TRENDnet TEG-30284

TEG-30284(v1.0R)

• 24 x Gigabit ports and 4 x 10G SFP+ slots for high speed connections

• Easy to use web-based management interface

• 128 Gbps switching capacity

• 802.1Q, Dynamic GVRP, Private, and Voice VLAN

• IGMP v1, v2, v3 snooping

• STP, RSTP, and MSTP spanning tree protocols

• SNMP( v1,v2c,v3), SNMP Trap, RMON, port mirror, syslog, and SMTP alert

• ACLs, MAC filtering, DoS,and 802.1X/TACACS+ network access control

• 802.1p / DSCP / Queue Scheduling QoS support

• Smart fans reduce energy consumption and auto adjust for efficiency

TRENDnet's 28-Port Web Smart Switch with 24 x Gigabit ports and 4 x 10G SFP+ slots, model TEG-30284, is a cost-effective switch for high-speed network uplinks or downlink server connections. A convenient web-based management interface offers features for traffic control, troubleshooting ,access control, and monitoring, allowing for network integration flexibility into an SMB network.

The front panel features 24 × Gigabit RJ45 ports and 4 × 10G SFP+ ports, with no console port. The rear panel is equipped with a power socket, and ventilation outlets are located on both sides of the chassis.

TRENDNET TEG-30284 switch front and back panels

Figure 1 Front and Rear Panels of TRENDnet TEG-30284 Switch

An RJ45 twisted-pair cable was used to connect the host to the switch. The default IP address is 192.168.10.200, with the default username admin and password admin. Users can log in to the web management interface to monitor and configure the device.

Figure 2 TRENDnet TEG-30284 Web Management Login

After removing the top cover, the internal structure is divided into three main parts: a main PCB integrating core chips, resistors, and heat dissipation components; an LED control board; and a separate power board. The fan is independently mounted on one side.

Figure 3 Internal Structure of TRENDnet TEG-30284

With two heat sinks removed, all key components are exposed. The main switch chip and PHY chips are located beneath the heat sinks.

Figure 4 Front Side of TRENDnet TEG-30284 Mainboard

Figure 5 Rear Side of TRENDnet TEG-30284 Mainboard

The key chips of the TRENDnet TEG-30284 switch are detailed in the table below:

Table 1 Key Chips of TRENDnet TEG-30284

Type	Transformer	Main Switching Chip	PHY Chip	Memory Flash	DRAM
Brands	FPE	BROADCOM	BROADCOM	MXIC	NANYA
Model	LG72531DF	BCM53346A0KFSBG	B50282C1KFBG	MX25L25635FMI-10G	NT5CC128M16IP-DI
Photo