This is an old revision of the document!
UniFi Switch 8
Series Type: UniFi
Website Link: Switch 8 8
Model: US‑8
Type: Fully Managed Gigabit Switch
Description: The UniFi Switch 8-port models feature Gigabit Ethernet ports in a compact form factor. The switches are fully manageable, delivering robust performance and intelligent switching for your networks.
Specifications
| US-8 | |
|---|---|
| Dimensions | 148.0 x 99.5 x 30.7 mm (5.83 x 3.92 x 1.21") |
| Weight | 432 g (15.24 oz) |
| Enclosure Characteristics | SGCC Steel |
| Total Non-Blocking Throughput | 8 Gbps |
| Switching Capacity | 16 Gbps |
| Max. Power Consumption | 12W (Excluding PoE Output) |
| Max. Passive PoE Wattage per Port | PoE Mode 1: 12W @ 802.3at, PoE Mode 2: 12W @ 48V, DC Input Mode: 12W @ 48V |
| Passive PoE Voltage Range | Depends on Power Source |
| Power Method | (1) DC 48V, Max. 1.25A, or (1) PoE Input, 802.3 af/at (Pins +1, 2; -3, 6) |
| Power Supply | External AC/DC Adapter, 48V, 0.5A |
| Supported Voltage Range | DC: 48V; 48V Mode: 56V to 40V |
| LEDs | PoE (Port 8), Speed/Link/Activity (All Ports) |
| System LED | Status |
| Sound Level | 0.7 dBr (Fanless) |
| Networking Interfaces | (8) 10/100/1000 Mbps RJ45 Ports |
| PoE In Interface (Port 1) | PoE Mode 1: 802.3af/at (Pins +1, 2; -3, 6), PoE Mode 2: 48V (2-Pair Pins +4, 5; -7, 8) |
| PoE Out Interface (Port 8) | PoE Mode 1: 48V (Pins +1, 2; -3, 6), PoE Mode 2: Passive 48V (2-Pair Pins +4, 5; -7, 8), DC Input Mode: DC Passthrough (Pins +1, 2; -3, 6) |
| Management Interface | Ethernet In-Band Management |
| ESD/EMP Protection | Air: ± 24 kV, Contact: ± 24 kV |
| Rackmount | Yes, 1U |
| Operating Temperature | -10 to 45° C (14 to 113° F) |
| Operating Humidity | 5 to 95% Noncondensing |
| Shock and Vibration | ETSI300-019-1.4 Standard |
| Certifications | CE, FCC, IC |
LED Status Light
- Blue - Solid
- Normal Operation
- White - Flashing
- Unconfigured state
Troubleshooting tips
- No light/power
- Check power connection.
- Are you connected to a PoE enabled switch or PoE injector?
- Can only connect to the primary/default VLAN
- Check that your switch port has all VLANs enabled (Try cycling the port through 'Disabled')
FAQ
- What is PoE Passthrough
- The US-8 switch can be powered via PoE in Port 1 (Labeled PoE In). Remaining wattage of the port is passed to Port 8 (Labeled PoE Out) to chain into a PoE powered device.
Add simple diagram of this function for clarity?
Note: Without PoE input via port 1, port 8 will NOT have PoE.