![[48V-1.5A~2A][5.5*2.1mm With Central Pin] OEM Swann NVR8-7300 7400 7285 Series - Power Supply Adapter Wall Charger - Polar Tech Australia](http://www.polartech.com.au/cdn/shop/files/1_9efaf7d8-f8ae-448d-bb53-4983e228272b_535x.png?v=1770708228)
![[48V-1.5A~2A][5.5*2.1mm With Central Pin] OEM Swann NVR8-7300 7400 7285 Series - Power Supply Adapter Wall Charger - Polar Tech Australia](http://www.polartech.com.au/cdn/shop/files/2_f7218ef0-ee9c-4f1c-9b49-8549936a8cc0_535x.png?v=1770708228)
![[48V-1.5A~2A][5.5*2.1mm With Central Pin] OEM Swann NVR8-7300 7400 7285 Series - Power Supply Adapter Wall Charger - Polar Tech Australia](http://www.polartech.com.au/cdn/shop/files/3_24c9fc4c-c3e9-4d32-bb50-a0499a862e32_535x.png?v=1770708228)
![[48V-1.5A~2A][5.5*2.1mm With Central Pin] OEM Swann NVR8-7300 7400 7285 Series - Power Supply Adapter Wall Charger - Polar Tech Australia](http://www.polartech.com.au/cdn/shop/files/4_43fc56b2-e8e4-4301-91a6-2ffd3e00873d_535x.png?v=1770708228)
![[48V-1.5A~2A][5.5*2.1mm With Central Pin] OEM Swann NVR8-7300 7400 7285 Series - Power Supply Adapter Wall Charger - Polar Tech Australia](http://www.polartech.com.au/cdn/shop/files/5_1f3a60cc-e736-45da-be70-600e06196967_535x.png?v=1770708228)
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![Load image into Gallery viewer, [48V-1.5A~2A][5.5*2.1mm With Central Pin] OEM Swann NVR8-7300 7400 7285 Series - Power Supply Adapter Wall Charger - Polar Tech Australia](http://www.polartech.com.au/cdn/shop/files/2_f7218ef0-ee9c-4f1c-9b49-8549936a8cc0_400x@2x.png?v=1770708228)
![Load image into Gallery viewer, [48V-1.5A~2A][5.5*2.1mm With Central Pin] OEM Swann NVR8-7300 7400 7285 Series - Power Supply Adapter Wall Charger - Polar Tech Australia](http://www.polartech.com.au/cdn/shop/files/3_24c9fc4c-c3e9-4d32-bb50-a0499a862e32_400x@2x.png?v=1770708228)
![Load image into Gallery viewer, [48V-1.5A~2A][5.5*2.1mm With Central Pin] OEM Swann NVR8-7300 7400 7285 Series - Power Supply Adapter Wall Charger - Polar Tech Australia](http://www.polartech.com.au/cdn/shop/files/4_43fc56b2-e8e4-4301-91a6-2ffd3e00873d_400x@2x.png?v=1770708228)
![Load image into Gallery viewer, [48V-1.5A~2A][5.5*2.1mm With Central Pin] OEM Swann NVR8-7300 7400 7285 Series - Power Supply Adapter Wall Charger - Polar Tech Australia](http://www.polartech.com.au/cdn/shop/files/5_1f3a60cc-e736-45da-be70-600e06196967_400x@2x.png?v=1770708228)
Connection: AU/NZ, US/CN, UK, EU Plug
Connectors: 6.4*4.0mm With Central Pin
Input Voltage: AC100-240V, 50/60Hz -
Material: ABS
Output: 48V-2A 90W
Key Features & Benefits
- Compatible replacement for Swann power supply model GQ90-480187-E1
- 48V DC output at 2A — supports original 1.87A requirement
- Correct DC connector — 4.0 mm inner / 6.4 mm outer, centre pin
- Wide input voltage — 110–240V AC
- Stable regulated output — helps prevent NVR reboot and HDD faults
- IEC 240V power cable included
Compatible Swann Recorders
- Swann NVR8-7300
- Swann NVR8-7400
- Swann NVR8-7285
- Swann NVR4-7300
- Swann NVR4-7400
- Swann NVR4-7285
- Swann NVR4-575 / NVR4575
Common reference numbers used on Swann adapters include GQ90-480187-E1, as well as recorder series identifiers such as 87300, 87400, 8-7300, 8-7400, 8-7285.
Technical Specifications
| Compatible Adapter Code | GQ90-480187-E1 |
|---|---|
| Output Voltage | 48V DC |
| Output Current | 2A (supports 1.87A devices) |
| Input Voltage | 110–240V AC |
| DC Connector | 4.0 mm inner / 6.4 mm outer, centre pin |
When to Replace
- No power — LEDs off, no fan/HDD activity.
- Boot hang — stuck on splash screen (insufficient current).
- HDD not detected — weak supply won’t spin the drive reliably.
- PSU LED on but NVR unstable — partial adaptor failure under load.
