Periphera ls

Clear up your confusion about connectors

Which printers are confirmed to work with Sierra?

Apple provides a list of all printers and scanners that are supported by drivers supplied with Sierra at apple.co/2gcIUj7. Most if not all Canon models require macOS 10.12.1 or higher, as they have problems with the initial release. Other printer manufacturers may also offer separate drivers on their website.

How can I eject a stuck disk from my Mac’s optical drive?

The most reliable way is to hold down the mouse button during startup, until the optical drive spits out the disk. However, undersize, non-circular or warped disks, or those stuck due to a loose label, may get mechanically stuck, and you’ll need to take the drive (or your Mac) to an engineer who can disassemble it to remove the disk. Start by contacting an Authorised Service Provider on the list at apple.co/2fBpTU0.

How can I replace a failed disk in my RAID drive?

You’ll need to buy a replacement of the same make and model as the others installed in the drive. If that’s expensive or impossible, buy the same make, capacity, interface, and spin speed. That should minimise the risk of compatibility problems.

What size UPS should I get for a Retina 5K iMac?

Its maximum power consumption is 240W. You would expect a runtime of over five minutes at that power from a fully-charged 550VA/330W UPS, more than enough to shut down safely. A UPS that offers less than 400VA/240W could prove insufficient.