# Compare mk1 vs mk2

Changes for Brio rework kit were introduced at 2021-04-18. There were no major changes so initial design was replaced by mk2 version. All changes listed below:

<table border="1" id="bkmrk-feature-mk1-mk2-conn" style="border-collapse: collapse; width: 100%;"><tbody><tr><td class="align-center" style="width: 33.3333%;">**Feature**</td><td class="align-center" style="width: 33.3333%;">**mk1**</td><td class="align-center" style="width: 33.3333%;">**mk2**</td></tr><tr><td style="width: 33.3333%;">Connectivity</td><td style="width: 33.3333%;">USB-C</td><td style="width: 33.3333%;"> [USB-C lock screws](https://wiki.kurokesu.com/books/cables/page/cable-usb-usb-c-15m-with-lock-screws)</td></tr><tr><td style="width: 33.3333%;">Body features</td><td style="width: 33.3333%;"> </td><td style="width: 33.3333%;">Larger pockets for microphone wires for easier assembly

</td></tr><tr><td style="width: 33.3333%;">Body features</td><td style="width: 33.3333%;"> </td><td style="width: 33.3333%;">Larger opening for a sensor - allows use of short back-focal lenses with [M12 lens adapter](https://www.kurokesu.com/shop/M12-TO-CS-ADAPTER)

</td></tr><tr><td style="width: 33.3333%;">Body features</td><td style="width: 33.3333%;"> </td><td style="width: 33.3333%;">Chamfered edges on front panel - small cosmetic change and minor weight saving

</td></tr><tr><td style="width: 33.3333%;">Body features</td><td style="width: 33.3333%;"> </td><td style="width: 33.3333%;">0.7mm thicker front plate

</td></tr><tr><td style="width: 33.3333%;">Weight (aluminum parts only)</td><td style="width: 33.3333%;">43.3g</td><td style="width: 33.3333%;">41.7g

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