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Your device information (model, product or serial number) helps us to identify replacement parts and common problems specific to your device. If you can’t find any of these numbers, we’ll only be able to identify the parts and provide estimates after our diagnostic procedure.

These numbers are usually on a label that’s either stuck on or engraved into the back or underside of your device. Product number and serial number may be referred to as P/N and S/N, respectively.

There has been a trend among manufacturers to make these labels less visible for aesthetic reasons. For older devices, normal wear and tear may damage the labels over time. These may make it difficult or impossible to identify the device accurately just by looking at it.

What’s the best number to provide?

In general the more details you provide, the easier it is for us to check part availability. The serial number is the most specific to your particular device, while the model and product numbers are more easily seen and readable.

Brand-specific instructions

Apple

Follow these instructions from Apple or see this page on EveryMac.com for details on identifying your iMac or MacBook, MacBook Pro or MacBook Air. The serial number is generally the best identifier for your Apple device. Model numbers (e.g. A1446) are easy to find on most products but one model number may refer to several products. EMC numbers (e.g. EMC 2952) are more specific than model numbers and can be used when the serial number isn't visible and the device isn't turning on.

Follow these instructions from Apple to find your iPhone or iPad's serial number.

Dell

Dell computers carry a 7-digit service tag, which is readable and specific to your exact device. It is usually easily seen on the label underneath your laptop or behind your desktop.

HP

For HP computers, the product number is usually specific enough.