Here is a DBX 266XS 2-channel compressor/gate in a single rack space with it's power cable in excellent condition.

Google AI says:

The DBX 266XS is a 2-channel analog compressor and noise gate. It helps smooth out loud and quiet sounds in your audio.

Key Specifications

• Type: Dual-channel VCA (Voltage Controlled Amplifier) compressor and gate.
• Frequency Response: 20 Hz to 20 kHz (+0, -0.5 dB).
• Dynamic Range: >114 dB unweighted.
• Inputs & Outputs: Balanced/unbalanced 1/4" TRS and XLR connectors.
• Sidechain: 1/4" TRS phone connectors for external processing (like frequency-based ducking).
• Dimensions: 1.75" x 5.75" x 19" (standard 1U rack space).
• Weight: 4.84 lbs (2.19 kg).
• Power: 15 Watts maximum, uses a standard IEC AC cable. [1, 2, 3]

Compressor Details

• Threshold Range: -40 dBu to +20 dBu.
• Ratio: 1:1 up to ∞:1 (Infinity to 1).
• Attack/Release: Program-dependent AutoDynamic technology (automatically adjusts to the audio).
• Features: Selectable Hard-Knee or Patented OverEasy compression. (OverEasy is a smooth "knee" that makes volume changes less abrupt). [1, 2, 3]

Expander/Gate Details

• Threshold Range: -60 dBu to +15 dBu.
• Ratio: 1:1 to 4:1.
• Attack Time: \(<100\text{ \mu s}\) (microseconds)