Roland UM-ONE mk2 USB MIDI Interface Cable
The UM-ONE mk2 is a straightforward beginner-tier USB MIDI cable offering a single 5-pin in and out, a simple pick that reflects its narrow remit. It is the easy way to connect an older 5-pin MIDI keyboard or synth to a computer or iPad. It is not for multi-port rigs, since it handles only one input and one output.
Scores
BreakdownHideOverall63±3Caliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions; excluded here: compatibility (no ecosystem dimension).
Scores
BreakdownHideCaliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions; excluded here: compatibility (no ecosystem dimension).
The ± band on the overall score reflects sourcing confidence — wider when fewer specs are verified.
How each score is computed: our scoring methodology.
Specifications
| Spec | Value | Verification |
|---|---|---|
| accessory type | cableSourced | Sourced |
1/1 detail specs sourced. Amber rows are flagged for verification — we show them as reported, not confirmed.
Verdict
Best for
- Getting an older 5-pin MIDI keyboard/synth into a computer or iPad (1-in/1-out)
Who should skip this
- Multi-port MIDI rigs (single in/out only)
Where to buy
List price $50
Prices are a guide and can change — confirm the current price on the retailer's site before buying.
Prices last checked Jun 20, 2026 — retailer prices change often, so click through for the current price.
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Compatibility
No platform-specific compatibility requirements — this works in any standard music production setup.
Upgrade path
A solid beginner pick that carries into higher-tier setups as your needs grow.