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简介

Not all versions of the Dell Inspiron 7415 2-in-1 came with a fingerprint reader (FPR)/power button combo unit. The modularity of the laptop internals allow for easy retrofitting of such unit as an upgrade. This guide can also simply serve as a way of replacing the power button.

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步骤 1 Intro

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Intro: 步骤 1 中的图像 1，1

Power button with keyboard/trackpad as reference

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步骤 2 Open bottom cover

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Open bottom cover: 步骤 2 中的图像 1，2

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Open bottom cover: 步骤 2 中的图像 2，2

7 total phillips head screws
4 loose screws
3 captured screws
Carefully pry the bottom cover up from the rear of chassis first (by captured-screws), then follow perimeter to unlatch all plastic clips.

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步骤 3 Free daughter-board

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Free daughter-board: 步骤 3 中的图像 1，1

Remove the two screen hinge screws and turn the hinge upright slowly while holding the screen-side of hinge as shown.

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步骤 4 Remove daughterboard

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Remove daughterboard: 步骤 4 中的图像 1，2

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Remove daughterboard: 步骤 4 中的图像 2，2

Remove the two daughterboard screws
Pry up from fan-side of daughterboard and slide slightly toward the fan to free the 3.5mm jack from the chassis.

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步骤 5 Power button removal

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Power button removal: 步骤 5 中的图像 1，1

The daughterboard cable should be able to bend out of the way to allow access to rear of power button.
Remove two more screws holding in the power button.
*Note the unused connecter on the daughterboard marked "FPR1". This is where the new FPR cable will connect.

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步骤 6 Install fingerprint reader

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Install fingerprint reader: 步骤 6 中的图像 1，3

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Install fingerprint reader: 步骤 6 中的图像 2，3

Dell Inspiron 14 7000 Series Power Button/Fingerprint Reader Replacement, Install fingerprint reader: 步骤 6 中的图像 3，3

Install and screw in new power button/FPR.
Route FPR cable and re-install the daughterboard.
Upend the FPR jack latch, slide in FPR connector, and lower latch to secure the cable.
Re-install hinge screws, CMOS battery, and bottom cover and screws.

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结论

Windows Update installed drivers for the "GOODIX USB2.0" device soon after initial boot. Part was drop-in, but fitment is a B-. You may need to do some trial and error for centering the plastic button in the keyboard shell cutout to prevent contact or rubbing when pressing. Fingerprint recognition is great!