Shure PS43US in-Line Power Supply for GLX4 and ULX4 Wireless Receivers (Replaces PS42US)

PERFECT. Connected to my computer with no issues.

Great replacement

Works like OEM. Just be careful because of thin wires and can be easily broken at the connection

I purchased this power supply as a replacement for my old Shure P4 Transmitter (PSM400). I've only had it for a few days, but it works exactly as expected. Glad I bought it.

Here's a tip for anyone with a Shure GLX series wireless mic receiver that might seem to have an internal charging fault. It's not the receiver, it's just the AC power adapter. It's even harder to diagnose because putting a DMM on the power pack output SEEMS to indicate it's OK. In fact the seemingly good power pack can develop a subtle defect -- inability to deliver sufficient momentary surge current - and that tricks the lithium battery charge circuitry into thinking there is a fault in the rather expensive receiver. That outboard power pack is voltage regulated and electronically over-current protected. ie. it's not just some cheap little basic wall adapter. These sorts of switching supplies (all of them in any make and model of appliance, be it built in or outboard) are prone to capacity failures whereby they still seem OK when metered with a DMM (with or without load) but in fact can no longer deliver full load spec. In fairness to the manufacturer, they sit there powered up 24-7, often for years at a time, running a rather complex highly efficient "switching power supply" circuit, pushing good luck to the limit. Often it's just a small aluminum electrolytic cap inside the power pack that "dries out" internally, greatly reducing capacitance, which in turn affects the power pack's output ability. So no, don't toss the nice high tech Shure wireless mic receiver. A quick purchase of a replacement power pack -- a MUCH cheaper repair -- and your Shure GLX series wireless mic receiver is all back in action, charging the lithium mic batteries properly. And thanks for factory replacement power packs being available. Good thinking.