Display
21.45-inch, IPS, 1920 x 1080
21.45
Refresh Rate
48 Hz - 100 Hz
48 Hz
Brightness
250 cd/m²
250 cd
Contrast Ratio
1300 : 1
1300
Overview
At 21.45 inches, the Asus C2221HF is a compact Full HD IPS monitor with a 100 Hz ceiling and VESA AdaptiveSync. Full HD at 102 PPI covers everyday tasks fine, though small text won't be as crisp as a QHD or 4K panel; IPS keeps colours stable off-angle, but 1300 : 1 contrast is the ceiling for dark scenes. The 48 Hz - 100 Hz range and VESA AdaptiveSync improve scrolling and light gaming; 5 ms (GtG); 1 ms (MPRT) includes a strobed MPRT claim that looks faster than true GtG behaviour. Inputs are 1 x HDMI 1.4; there is no USB-C docking. The trade-offs here are no HDR tier, a fixed-height stand, no speakers. It earns a buy when smoother 100 Hz IPS operation for everyday work is the priority; it is the wrong pick if the fixed-height stand and no display-capable USB-C would bother you.
BrandAsusPanel TypeIPSResolution1920 x 1080Refresh Rate48 Hz - 100 Hz
Key Highlights
- C2221HF's 21.45-inch Full HD panel delivers 102 PPI, which is adequate for everyday work, although fine text is less refined than on QHD or 4K.
- The C2221HF's IPS viewing remains stable, with 250 cd/m² typical brightness for indoor use.
- The C2221HF's video inputs are 1 x HDMI 1.4, with no USB-C dock.
- Compared with Asus VY229HF, the C2221HF's real difference is clear: it shares the same 21.45-inch Full HD format and 100 Hz ceiling, but the VY229HF adds antibacterial treatment and a different eye-care package.
Who Should Buy the Asus C2221HF
+ Best For
Straightforward office PCs
the C2221HF's Full HD, 48 Hz - 100 Hz and digital inputs cover routine work.
Readable everyday interfaces
the C2221HF's 102 PPI favours comfortable scaling over very fine detail.
Arm-mounted setups
the C2221HF's 100 x 100 mm VESA support fixes the stand's lack of height adjustment.
× Not Ideal For
HDR buyers
the C2221HF has no published HDR tier or peak-brightness specification.
Fast competitive gaming
the C2221HF's 48 Hz - 100 Hz ceiling is below specialist esports monitors.
Unassisted ergonomic desks
the C2221HF's stand cannot raise, swivel or pivot.
Display Performance
Refresh Rate
48 Hz - 100 Hz
For the C2221HF, full hd at 100 hz is easy for modern integrated graphics in desktop use and modest gpus in games.
Response Time
5 ms (GtG); 1 ms (MPRT)
The C2221HF's MPRT figure uses strobing and flatters the number beside normal GtG behaviour.
Brightness
250 cd/m²
The C2221HF is best suited to controlled indoor lighting.
Contrast
1300 : 1
The C2221HF matches Asus VY229HF at this panel figure; ports or size decide between them.
Colour Gamut
Not published
The C2221HF has no gamut percentage, so colour reach cannot be judged.
HDR
None listed
The C2221HF has no meaningful HDR hardware specified.
Gaming Performance
Refresh Rate48 Hz - 100 HzThe C2221HF matches Asus VY229HF at 48 Hz - 100 Hz; their practical difference lies in ports, size or stand.
Response Time5 ms (GtG); 1 ms (MPRT)The C2221HF MPRT figure relies on strobing.
VRR / Adaptive SyncVESA AdaptiveSyncOn the C2221HF, it helps reduce tearing inside the 48 Hz - 100 Hz range.
GPU RequirementFull HD at up to 100 HzFor the C2221HF, full hd at 100 hz is easy for modern integrated graphics in desktop use and modest gpus in games.
HDR & Brightness Reality
The C2221HF has no published HDR format or certification. Its 250 cd/m² typical brightness and 1300 : 1 contrast describe an SDR monitor, not hardware with highlight headroom or local dimming. The money is going into 48 Hz - 100 Hz operation instead. HDR video may still be accepted by a source device, but the sheet gives no basis for expecting a wider dynamic range. Buy it for its stated SDR strengths, not for HDR films or games.
Connectivity & Ports
HDMI1 x HDMI 1.4The C2221HF's published HDMI path handles its native timing. Compare this line directly with Asus VY229HF, where the family hardware may differ.
DisplayPortNoneThe C2221HF uses HDMI or USB-C instead.
USB-CNoneThe C2221HF provides no single-cable display or charging path.
USB HubNoneThe C2221HF lists no downstream USB hub.
Audio Out1 x 3.5 mm Audio OutThe C2221HF can feed external headphones or speakers.
Desk Fit & Ergonomics
Size / Footprint493.6 mm wide, 204.4 mm deep, 2.7 kgThe C2221HF's published stand depth matters on a narrow desk.
StandRemovableThe C2221HF's supplied stand cannot change viewing height. Check Asus VY229HF separately because the shared panel does not guarantee the same stand.
VESA Mount100 x 100 mmA compatible arm can replace the C2221HF's supplied stand.
Tilt-5° to +23°The C2221HF allows basic vertical angle correction.
Height AdjustNoAn arm or riser is the practical fix for the C2221HF.
Swivel / PivotNo / NoSwivel and portrait rotation are absent on the C2221HF.
Real-World Use Cases
the C2221HF's 21.45-inch Full HD panel handles documents, email and browser work.
the C2221HF's 102 PPI keeps interface sizing straightforward.
the C2221HF's 100 Hz lets camera movement and scrolling use the panel's full speed.
the C2221HF's 100 x 100 mm support overcomes the supplied stand's fixed height.
Pros & Cons
Pros
- The C2221HF's IPS viewing angles suit shared desks and off-centre viewing.
- The C2221HF's 48 Hz 100 Hz operation is well above ordinary office speed.
- The C2221HF's input mix includes 1 x HDMI 1.4.
- The C2221HF's 100 x 100 mm VESA support provides a clear upgrade path beyond the fixed stand.
Cons
- The C2221HF has no HDR tier or peak-brightness figure for its 250 cd/m² panel.
- The C2221HF's supplied stand has no height, swivel or pivot adjustment.
- The C2221HF has no display-capable USB-C input for one-cable laptop use.
Score & Ratings
5.2/10
Good
Model Information
5
| Specification | Value |
|---|---|
| Brand | Asus |
| Model | C2221HF |
| Full Product Name | Asus C2221HF |
| Model Year | 2024 |
| Available Colors | Black |
Display & Panel
5
| Specification | Value | What It Means |
|---|---|---|
| Screen Size | 21.45-inch | |
| Aspect Ratio | 1.778:1 | |
| Display Area | 86.68 % (percent) | |
| Panel Type | IPS | The C2221HF's IPS panel with 1300 : 1 contrast means stable viewing angles with modest dark-room depth. |
| Backlight Type | W-LED |
Resolution & Pixel Details
3
| Specification | Value | What It Means |
|---|---|---|
| Native Resolution | 1920 × 1080 | |
| Pixel Density | 102 PPI | The C2221HF's 102 PPI means adequate for everyday work, although fine text is less refined than on QHD or 4K; this matters more at desk distance than the resolution name alone. |
| Pixel Pitch | 0.248 mm (millimeters) |
Picture Quality & Color
3
| Specification | Value |
|---|---|
| Panel Bit Depth | 8 bits (6 bits + FRC) (FRC: Yes) |
| FRC | Yes |
| Display Colors | 16777216 colors |
Refresh Rate, Response & Gaming
1
| Specification | Value |
|---|---|
| Refresh Rate Range | 48 Hz - 100 Hz |
Ports & Connectivity
3
| Specification | Value |
|---|---|
| HDMI Ports | 1× HDMI 1.4 |
| HDMI Version | HDMI 1.4 |
| HDCP Support | Yes |
Audio, Camera, Network & Smart Features
1
| Specification | Value |
|---|---|
| Built-In Camera | No |
Ergonomics & Stand
4
| Specification | Value | What It Means |
|---|---|---|
| VESA Mount | 100 × 100 mm | |
| VESA Size | 100 × 100 mm | |
| Removable Stand | Yes | |
| Height Adjustment | No | No means the C2221HF fixes viewing height on the supplied stand, making a riser or VESA arm the practical correction. |
Dimensions, Weight & Design
2
| Specification | Value |
|---|---|
| Weight With Stand | 2.7 kg |
| Weight Without Stand | 2.3 kg |
Power & Operating Conditions
5
| Specification | Value |
|---|---|
| Power Input | 100–240V |
| AC Frequency | 50/60Hz |
| Typical Power Consumption | 12W |
| Average Power Consumption | 12W |
| Sleep Consumption | 0.3W |
Certifications, Standards & Licenses
4
| Specification | Value |
|---|---|
| Energy Star | Energy Star |
| TCO Certified | TCO Certified Displays |
| TÜV Flicker-Free | TÜV Rheinland Flicker-free Certified |
| TÜV Low Blue Light | TÜV Rheinland Low Blue Light Certified |
Frequently Asked Questions
01 How sharp is the C2221HF at 102 PPI? +
At 21.45-inch and 1920 x 1080, 102 PPI is adequate for everyday work, although fine text is less refined than on QHD or 4K. It should be judged at normal desk distance rather than from the resolution label alone.
02 What does the C2221HF's 48 Hz - 100 Hz range change in daily use? +
The published ceiling is 100 Hz, so motion can use the full 48 Hz - 100 Hz range where the source supports it. Full HD at 100 Hz is easy for modern integrated graphics in desktop use and modest GPUs in games.
03 Which laptop connection makes sense for the C2221HF? +
Use 1 x HDMI 1.4 for video. USB-C video and charging are not published, so laptop power remains separate.
04 What compromise should buyers notice first on the C2221HF? +
The main compromise is the fixed-height stand and no display-capable USB-C. The specification also lists no meaningful HDR tier, so the monitor should be bought for SDR use.
05 What separates the C2221HF from the Asus VY229HF? +
It shares the same 21.45-inch Full HD format and 100 Hz ceiling, but the VY229HF adds antibacterial treatment and a different eye-care package. The decision should follow that practical difference rather than the shared family styling.
Reviews
DISPLAYINPUT · INDEPENDENT · SPEC-BASED · NO SPONSORED PLACEMENT
SHEET № C2221HF