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ACGAM VGN S99 Wireless Mechanical Keyboard

ACGAM S99 Mechanical Keyboard

The ACGAM S99 is a wireless mechanical keyboard with a 98% layout, suited for users who want versatile connectivity and a comfortable typing experience. It targets gamers and typists who need low-latency wireless options alongside wired use. Its hot-swappable switches and sound-absorbing design also appeal to hobbyists seeking customization and quieter typing.</p... Read more
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Compare ACGAM S99 vs Keychron V6 Max vs Keychron K10 HE Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
ACGAM S99Keychron V6 MaxKeychron K10 HE
70
ACGAM VGN S99 Wireless Mechanical Keyboard
96
Keychron V6 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection
96
Keychron K10 HE Wireless Magnetic Switch Custom Keyboard ISO Layout Collection
0.0 (0)
4.9 (37)
4.5 (8)
  • Has Linear switch options
  • Available in a 96% layout
  • Built with the ANSI layout standard
  • Equipped with a 6000 mAh battery
  • Weighs about 1200 g
  • Sized at 46 x 143 x 386 mm
  • Made with a Aluminum case
  • Offers Yes, Rgb RGB lighting
  • Has Tactile, Linear, Clicky switch options
  • Built with the ISO-DE, ISO-UK, ISO-Nordic, ISO-SW, ISO-ES, ISO-FR, ISO-IT, ISO, JIS, ANSI layout standard
  • Comes with a knob
  • Provides dedicated media keys
  • Weighs about 1110 g
  • Sized at 30 x 149 x 448 mm
  • Made with a ABS, Plastic case
  • Features PBT, ABS keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
  • Released in 2025
  • Has Magnetic, Linear, Tactile, Clicky switch options
  • Built with the ISO, ISO-UK, ISO-DE, ANSI layout standard
  • Utilizes Hall effect sensors
  • Enables rapid trigger functionality
  • Uses a Tray Mount mounting style
  • Weighs about 1320 g
  • Sized at 40 x 445 x 129 mm
  • Made with a Aluminum, Wood, Plastic, ABS case
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Scores
  • Performance: 66.7
  • Build Quality: 69
  • Productivity: 79.5
  • Customizability: 65.5
  • Portability: 67.6
Scores
  • Performance: 83.3
  • Build Quality: 86.4
  • Productivity: 97.3
  • Customizability: 99.5
  • Portability: 53.3
Scores
  • Performance: 92.3
  • Build Quality: 89.2
  • Productivity: 93.9
  • Customizability: 95
  • Portability: 55.8
Name
ACGAM S99
Name
Keychron V6 Max
Name
Keychron K10 HE
Release year
2024
Release year
2024
Release year
2025
Switch Options
Linear
Switch Options
Tactile, Linear, Clicky
Switch Options
Magnetic, Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
96%
Layout Size
100%
Layout Size
100%
Layout Standard
ANSI
Layout Standard
ISO-DE, ISO-UK, ISO-Nordic, ISO-SW, ISO-ES, ISO-FR, ISO-IT, ISO, JIS, ANSI
Layout Standard
ISO, ISO-UK, ISO-DE, ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
USB passthrough
 
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
6000 mAh
Battery capacity
4000 mAh
Battery capacity
4000 mAh
Hall Effect Support
 
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Gasket Mount
Mount Style
Gasket Mount
Mount Style
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb, South-face
Backlight
 
Rgb, North-face
Case Colors
Case Colors
Case Colors
Case Material
Aluminum
Case Material
ABS, Plastic
Case Material
Aluminum, Wood, Plastic, ABS
Keycaps Material
PBT
Keycaps Material
PBT, ABS
Keycaps Material
PBT
Dimensions
46 x 143 x 386 mm
Dimensions
30 x 149 x 448 mm
Dimensions
40 x 445 x 129 mm
Weight
1200g
Weight
1110g
Weight
1320g
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Product Description

The ACGAM S99 is a wireless mechanical keyboard with a 98% layout, suited for users who want versatile connectivity and a comfortable typing experience. It targets gamers and typists who need low-latency wireless options alongside wired use. Its hot-swappable switches and sound-absorbing design also appeal to hobbyists seeking customization and quieter typing.

Key Features

  • Offers three connection modes: Bluetooth 5.0, 2.4GHz wireless, and wired USB Type-C, allowing flexible use across devices and scenarios.
  • SmartSpeed X technology provides a 1000Hz polling rate for responsive input, beneficial for gaming and fast typing.
  • Hot-swappable sockets support two custom linear switches, enabling switch replacement without soldering.
  • Large 6000mAh battery supports up to 35 hours of use with backlighting and up to 35 days without, reducing charging frequency.

Build Quality and Typing Experience

  • Single-key slotted PCB with plate-spring gasket mounting offers moderate typing cushioning and stability.
  • Four-layer sound-absorbing design and leaf-spring gasket structure reduce noise and improve acoustics for quieter typing.
  • Keycaps are double-shot PBT with Cherry profile, providing durability and a familiar key shape for comfortable typing.
  • Switch options include Aurora Ice Cream and Anya linear switches, both designed for smooth, light actuation.

Connectivity

  • Bluetooth 5.0 suits mobile or multi-device use but may have higher latency than 2.4GHz wireless.
  • 2.4GHz wireless mode offers lower latency, preferable for gaming without cables.
  • Wired USB Type-C connection ensures zero latency and charging simultaneously.

Compatibility

  • Compatible with Windows, MacOS, and Linux, covering most desktop environments.
  • 99-key 98% layout balances compactness with function keys and arrow cluster, fitting varied workflows.

Trade-offs

  • At 1.2kg, the keyboard is moderately heavy, which may reduce portability.
  • Switch options are limited to two linear types, which may not suit users preferring tactile or clicky feedback.
  • Firmware and keymapping customization details are unknown, possibly limiting advanced remapping.

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