Genuine Swann SR-PSU-48V-3.75: the 48V 3.75A, 180W round 4-pin power supply for Swann NVR16-8580 16-channel PoE recorders, with an Australian IEC mains lead.
- ✓48V DC, 3.75A, 180W output
- ✓Round 4-pin keyed plug: upper pins +48V, lower pins GND
- ✓Fits NVR16-8580, NVR16-8580RN, NVR-168580
- ✓Also runs Swann 8-channel 4-pin NVRs
- ✓Genuine supply, approved for Australia
- ✓Australian IEC mains lead included

Genuine Swann power supply.
48V. 3.75A. Round 4-pin.
This is the SR-PSU-48V-3.75, the genuine 180W supply for the Swann NVR16-8580 family. It powers the recorder, its hard drive and all 16 PoE cameras from one plug.
In one sentence: the SR-PSU-48V-3.75 is the genuine Swann 48V DC, 3.75A, 180W power supply with a keyed round 4-pin plug and an Australian IEC mains lead, for 16-channel PoE recorders such as the Swann NVR16-8580.
Check the voltage on your old label before you order.
Your old adaptor must read 48V. Some older Swann DVRs also used a round 4-pin plug but run on a lower voltage, and 48V will damage them. If your old adaptor reads 48V 3.75A with a round 4-pin plug, this is the one. If it reads 48V 1.5A it came from an 8-channel recorder, and this supply will still run it. If your recorder has a round barrel socket, this plug will not fit.
- 48V 3.75A power supply with 4-pin DC lead
- Australian IEC mains lead
- Nothing else for a straight swap
- A mains power point near the recorder
When a 16-channel recorder will not stay on.
A Swann 16-channel PoE recorder feeds every camera from this one adaptor. When the supply tires, the recorder restarts, the hard drive drops out or cameras go offline at night when the infrared turns on. A full 3.75A, 180W replacement brings the power budget back.

Mains end
IEC inlet on one end, 4-pin lead on the other.
The Australian IEC mains lead plugs into the inlet. The DC lead carries a red 48V tag and ends in the round 4-pin plug that goes into the back of the recorder.

The label
Model CS-4803750, 48.0V 3.75A 180.0W.
Input 100 to 240V AC, 50/60Hz, 3.5A max. Output 48.0V DC, 3.75A, 180.0W, Efficiency Level VI, approved for Australia. The label also carries the pin drawing shown in the pinout below.
How it goes in
Swapped in a few minutes.
01
Check the label
The old adaptor must read 48V (3.75A, or 1.5A on an 8-channel unit) with a round 4-pin plug. Older Swann DVRs with a 4-pin plug may use a different voltage.
02
Shut down and unplug
Shut the recorder down from its menu, then switch off at the wall and remove the old adaptor.
03
Line up the key
Turn the plug until its key matches the socket. It only fits one way. Never force it.
04
Power up
Fit the mains lead and switch on. The recorder boots and the PoE cameras reconnect.
At a glance
SR-PSU-48V-3.75
Show specs
Output
48.0V DC, 3.75A
Power
180W
Input
100–240V AC, 50/60Hz, 3.5A max
DC plug
Round 4-pin, keyed
Pinout
Upper two pins +48V, lower two pins GND (0V), looking into the plug with the key at the bottom
Supply model
CS-4803750
Cross-reference
FJ-SW2028A48003750, FJ-SW2028A48003850
Efficiency
Level VI
Approvals on the label
RCM, UL, FCC, CE, UKCA; indoor use only
Mains lead
Australian IEC lead included
Made for
Swann NVR16-8580, NVR16-8580RN, NVR-168580
Not for
Recorders with a round barrel DC socket
Colour
Black
Warranty
12 months, supported by InFront Technologies

Looking into the end of the plug with the key at the bottom: the upper two pins are +48V, the lower two pins are ground (0V). Drawn from the pin diagram on the supply's label.
Where it is used
Other uses for a 48V 4-pin supply.
Medical and lab
Non-patient equipment in clinics, hospitals and labs: computer carts, medical monitors, lab instruments and admin gear. It is not a medical-rated supply, so never use it on patient-connected devices.
Industrial and automation
A clean, regulated 48V, 180W source for stepper and servo drives, motion controllers, linear stages, CNC, test rigs and benches with a 4-pin DIN input.
Networking and PoE
Industrial and desktop PoE switches with a 48V 4-pin DIN input, powering Wi-Fi access points, IP phones, cameras and sensors.
Audio-visual and broadcast
48V broadcast and AV gear, and the PoE switches behind AV-over-IP encoders, conference cameras, Dante speakers and room panels.
Telecom and VoIP
48V DC equipment and PoE for phone systems. Check the polarity first: some telecom gear runs on negative 48V.
CCTV and security
The genuine Swann replacement for 16- and 8-channel 4-pin NVRs and kits, and the spare installers keep in the van.
Pair it with
Other recorders, other supplies
8-channel
Want the exact 8-channel part?
Swann NVR8-8580, 8580RN, 8780 and 8600 ship with the 48V 1.5A 4-pin supply. This 3.75A supply also runs them, or choose the 1.5A one for a like-for-like swap.
Barrel plug
Swann NVR-7300, 7400 or 7285?
Those recorders have a round barrel socket, not 4 pins. They need our 48V barrel-plug supply instead.
Part check
Not sure which one?
Email a photo of your recorder's underside label and the old adaptor label to [email protected] and we will match it.
SR-PSU-48V-3.75 or the 8-channel 48V 1.5A supply
| SR-PSU-48V-3.75 (this supply) | SR-PSU-NVR48-1.5 | |
|---|---|---|
| Made for | 16-channel NVR16-8580 family | 8-channel NVR8-8580, 8580RN, 8780, 8600 |
| Output | 48V DC, 3.75A | 48V DC, 1.5A |
| Power | 180W | 72W (48V × 1.5A) |
| Plug | Round 4-pin, keyed | Round 4-pin, keyed |
| Runs an 8-channel 4-pin NVR | Yes, with headroom | Yes |
| Runs a 16-channel NVR | Yes | No, not enough current |
| Supply model | CS-4803750 | CS-4801500 |
Both supplies have the same 48V round 4-pin plug. The amps are the difference: a 16-channel recorder needs the 3.75A supply, an 8-channel recorder runs on either.
Common questions
Will this fit my Swann NVR16-8580?
Yes. It is the 48V 3.75A round 4-pin supply the NVR16-8580, NVR16-8580RN and NVR-168580 use. Check your old adaptor reads 48V 3.75A and has the same 4-pin plug.
Which model numbers does this power supply suit?
Equipment with a 48V 4-pin DIN power input wired like this supply and drawing 3.75A or less. That includes TRENDnet TI-PG162, TI-PG62 and TI-PG743Bi industrial switches, ZyXEL GS1900-8HP and GS1900-10HP, the D-Link DIS-200G-12PSW, Datavideo HBT-11 and HBT-6, and Swann NVR16-8580, NVR16-8780 and SONVK kits. The full list is under Model numbers at the bottom of this page. Pin layouts differ between makers, so always compare yours with our pinout drawing first.
What is the pinout of the 4-pin plug?
Looking into the end of the plug with the key at the bottom, the upper two pins are +48V and the lower two pins are ground (0V). The same drawing is printed on the supply's label.
How do I check the supply with a multimeter?
Set the meter to DC volts, plug the supply into the mains, then touch the red probe to an upper pin and the black probe to a lower pin. It should read about 48V. Do not let the probes short two pins together.
Can I use it on my 8-channel Swann recorder?
Yes. The 8-channel NVR8-8580, 8580RN, 8780 and 8600 use a 48V 1.5A supply with the same 4-pin plug. The voltage matches and the recorder only draws the current it needs, so the 3.75A supply simply has more headroom.
Can I use the 1.5A supply on a 16-channel recorder instead?
No. A 16-channel recorder powering 16 PoE cameras needs the full 3.75A. On 1.5A it will restart or drop cameras, especially at night when the infrared lights come on.
Does it fit Swann NVR-7300 or NVR-7400 recorders?
No. Those recorders have a round barrel socket. They need our 48V barrel-plug supply, not this 4-pin one.
Will it work on an older Swann DVR, another brand, or non-CCTV equipment?
Only if your equipment takes 48V DC through the same round 4-pin plug with the same pin layout and draws 3.75A or less. Some older Swann DVRs used a 4-pin plug at a lower voltage, many monitors and POS terminals use the same plug at 12V or 24V, and some makers put the pins in a different order. Any of these can damage the equipment. Check first, or send us a photo of the label and we will confirm.
What are the cross-reference part numbers?
The supply model is CS-4803750. Swann labels for this supply also show FJ-SW2028A48003750 or FJ-SW2028A48003850.
Is this a genuine supply, and why not buy a cheap generic one?
Yes. This is the genuine supply Swann fits to these recorders, approved for use in Australia, and it comes with an Australian IEC mains lead. Cheap online 48V adaptors are often not RCM approved, can have the 4 pins in a different order, overstate their current, or drift off 48V under load. That can kill the recorder, its PoE ports or the hard drive, and a non-compliant mains supply is a fire and shock risk that insurers may not cover.
How do I know my old supply has failed?
Common signs are a recorder that will not turn on, restarts by itself, loses its hard drive, or drops PoE cameras when they switch to night mode. A new supply is the cheapest thing to rule out first.
Can I use it outdoors?
No. The label marks it for indoor use only. Keep it somewhere dry and ventilated, not inside a closed cupboard with the recorder sitting on it.
Supported by InFront Technologies.
Not sure it fits? Call 1300 736 970 or email a photo of your recorder and old adaptor labels to [email protected].
Installation and safety
Mains powered. The supply plugs into a standard power point with the IEC lead. Do not open the case. A new power point needs a licensed electrician.
Beware of non-compliant supplies. Every mains power supply sold in Australia must carry the RCM mark. Unbranded 48V adaptors from online marketplaces often do not, and some have the wrong pinout or cannot deliver their rated current. A failed cheap supply can take the recorder, its cameras and your footage with it. This genuine Swann supply is approved for use in Australia.
Match the voltage and pinout. Only connect it to equipment whose old supply reads 48V DC on the same 4-pin layout. Some older Swann DVRs used a 4-pin plug at a lower voltage, and 48V will damage them.
Indoor use. Indoor use only. Keep it dry and give it room to shed heat.
Do not modify the lead. Cutting or rewiring the DC lead voids the warranty. Any custom 48V wiring should be done by someone qualified.
What it does not do. It is not a battery charger and it does not fit recorders with a barrel DC socket.
Figures. From the rating label on the supply (model CS-4803750).
Model numbers
ZyXEL GS1900-8HP, ZyXEL GS1900-10HP, D-Link DIS-200G-12PSW, TRENDnet TI-PG541, TRENDnet TI-PG541i, TRENDnet TI-PG62, TRENDnet TI-PG62F, TRENDnet TI-PG50F, TRENDnet TI-PG80F, TRENDnet TI-PG102, TRENDnet TI-PG102F, TRENDnet TI-PG160, TRENDnet TI-PG162, TRENDnet TI-PG743Bi, TRENDnet TI-G102, TRENDnet TI-G162, TRENDnet 48VDC3000 adaptor, Datavideo HBT-11, Datavideo HBT-6, Mobile clinical workstations, medical computer monitors and lab equipment on 48V 4-pin DIN, Telecom and VoIP gear with a 48V 4-pin DIN input, Swann NVR16-8580, Swann NVR16-8580RN, Swann NVR16-8580RU, Swann NVR-168580, Swann NVR168580, Swann NVR16-8580H, Swann NVR16-8580T, Swann NVR16-8580T4, Swann SRNVR-168580H, Swann SRNVR-168580T4, Swann NVR-8580 16-channel, Swann NVR16-8780, Swann NVR16-8780RN, Swann NVR16-8600RU, Swann NVR16-ADVANX (AdvancedX 16-channel), Swann SONVK-1676808, Swann SONVK-1676808B8D, Swann SONVK-16768010D, Swann SONVK-1676810, Swann SONVK-1676816, Swann SONVK-1686804FB4D, Swann SONVK-1686812D, Swann SONVK-1686816FB, Swann SONVK-1689808, Swann SONVK-1689808D, Swann SONVK-1689808B8D, Swann SONVK-16898081PT, Swann SONVK-1689812, Swann CONV16-85806B2FB, Swann NVR8-8580, Swann NVR8-8580RN, Swann NVR8-8580RU, Swann NVR8-8780, Swann NVR8-8780RN, Swann NVR8-8600RU, Swann SWNVR-8580, Swann SWNVR-88580H, Swann SRNVR-88600T, Swann NVR8-ADVANX (AdvancedX 8-channel), Swann SWNVK-886808FB, Swann SWNVK-88680W4FB, Swann SWNVK-88680W8FB, Swann SONVK-889808D, CS-4803750 adaptor, FJ-SW2028A48003750 adaptor, FJ-SW2028A48003850 adaptor, CS-4801500 adaptor, FJ-SW20254801500 adaptor.
This list is compiled from published specifications and third-party sources that InFront Technologies has not confirmed. Always check the voltage, current, plug and pin layout against your equipment's own label or manual before connecting. InFront Technologies takes no liability for damage, loss or injury caused by incorrect information in this list or by connecting this supply to equipment it does not suit.










































