For most laptop users, it can. The Philips 27B1U3900 is a 27-inch 4K IPS monitor with a built-in USB-C dock: one cable carries the display signal, charges the laptop at up to 90 W, connects three USB-A ports and provides wired Ethernet. That covers what most people use a separate docking station for. What it does not offer is a second video output for a dual-monitor setup, a KVM switch or Thunderbolt, and its refresh rate is 60Hz. We have not tested this unit ourselves, and we found no independent lab review with measured results, so this assessment is based on Philips' official product leaflets. At SourceIT the 27B1U3900 is S$381.60 (listed 30 Oct 2026).
What are the key specifications?
| Specification | Philips 27B1U3900 |
|---|---|
| Panel | 27" IPS, 3840x2160 at 60Hz, about 163 pixels per inch |
| Brightness and contrast | 350 cd/m², 1000:1 typical, HDR10 support |
| Colour | 1.07 billion colours (8-bit + FRC) |
| USB-C upstream | DisplayPort Alt Mode, data, power delivery up to 90 W |
| Ethernet | RJ45; up to 1 Gbps when the USB-C link runs at USB 3.x, 10/100 Mbps on USB 2.0 |
| USB hub | 3x USB-A (USB 3.2 Gen 1), one with BC1.2 fast charging |
| Other inputs | 2x HDMI 2.0, 1x DisplayPort 1.4; picture-in-picture and picture-by-picture |
| Stand | 130 mm height, tilt -5/25°, swivel ±180°, pivot ±90° |
| Eye care | Flicker-free, LowBlue mode, TÜV Eye Comfort |
| Power | 25.3 W typical on-mode, 0.3 W standby |
From the Philips 27B1U3900 product leaflets (2026). Philips' regional leaflets give different colour gamut figures, so we do not quote one.
What does "replacing the dock" actually mean?
A typical USB-C docking station gives a laptop power, displays, USB ports and Ethernet through one cable. The 27B1U3900 does the same for one screen. Plug in a USB-C laptop that supports DisplayPort Alt Mode and power delivery, and you get the 4K picture, up to 90 W of charging, three USB-A ports for a keyboard, mouse and webcam, and a wired network connection. For hot-desking that means one cable per desk instead of a dock, a power brick and a display cable.
The Ethernet note matters. Philips' leaflet says the LAN port runs at up to 1 Gbps only when the USB-C connection operates at USB 3.x speed, and at 10/100 Mbps on USB 2.0. Some laptops reduce the USB data speed to give the display more bandwidth at 4K, so if fast wired networking matters, confirm it with your laptop model. Our post Your Laptop Has USB-C. So Why Doesn't Everything Work? explains why USB-C ports differ.
A docking monitor removes a box from every desk. Check the one or two things it does not do before you remove the dock as well.
Where does a separate dock still win?
- Two external monitors. The leaflet lists no DisplayPort out or daisy-chain, so a second screen needs its own cable from the laptop or a separate dock. The 27B2U3601 QHD model does list daisy-chaining.
- Laptops needing more than 90 W. Many workstation and gaming laptops draw more; they will charge slowly or not at all.
- Thunderbolt peripherals. Fast external storage and Thunderbolt devices need a Thunderbolt dock or monitor.
- Two computers at one desk. There is no KVM switch listed; consider the 34B2U3600C ultrawide instead.
- High refresh rates. At 60Hz, scrolling is less smooth than on 100 or 120Hz office monitors.
For the wider question, see Is the Docking Station Finally Becoming Obsolete?
Is 4K at 27 inches right for office work?
For text-heavy work, 4K at 27 inches gives about 163 pixels per inch, which makes text noticeably sharper than QHD (about 109 ppi). Windows will usually recommend 150% scaling, so everything is the same physical size as on a QHD screen, only crisper. Some older applications scale poorly; our post Your 4K Monitor Might Be Making Work Harder covers what to check. If you prefer more working space over sharpness, a 32-inch 4K such as the Philips 32B1U3900 lets you run at lower scaling.
Who should buy one?
- Offices standardising on USB-C laptops with single-monitor desks.
- Hot-desking floors where one cable per desk keeps things simple.
- Finance, legal and admin teams who read documents all day and value sharp text.
- Companies with sustainability targets: Philips states 85% post-consumer recycled plastic.
Creative users who need verified colour accuracy should look at a calibrated monitor instead; see Philips 4K Office Monitor vs ASUS ProArt 4K.
Buying in Singapore
SourceIT supplies the Philips 27B1U3900 at S$381.60, alongside the 27B2U3601 QHD 120Hz docking monitor (S$362.40) and 32B1U3900 32-inch 4K (S$439.20), with a GST invoice. Prices listed 30 Oct 2026; check the warranty term with us. Browse Philips Business & Office Monitors. For a quotation, use Request for Quotation on the product page, call (65) 6978 3502, email Sales@sourceit.com.sg or use our contact page.
Frequently asked questions
Can the Philips 27B1U3900 charge a laptop? Yes. Its USB-C port supports power delivery up to 90 W, enough for most business laptops, along with the display signal and USB data.
Does the Philips 27B1U3900 have Ethernet? Yes, an RJ45 port. Philips states it runs at up to 1 Gbps when the USB-C link operates at USB 3.x and 10/100 Mbps on USB 2.0.
Can I daisy-chain a second monitor from the 27B1U3900? Philips' leaflet lists no DisplayPort out, so plan a separate connection for a second monitor. The 27B2U3601 lists daisy-chaining.
What refresh rate is the Philips 27B1U3900? 60Hz at 3840x2160. It suits office work rather than fast gaming.
How much is the Philips 27B1U3900 in Singapore? S$381.60 at SourceIT, listed 30 Oct 2026.
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Researched and verified by the SourceIT team for Singapore buyers.
