What is the purpose of express card slot in my laptop?

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My laptop has a 34mm ExpressCard slot I always viewed it as an appendix, similar to the PCMCIA card slots of old, but as it turns out

Re: T520 34mm Express Card Slot It's the PCI Express version supported by the chipset Only Ivy Bridge supports PCI Express , a T520 would Features · Category Kabel und Adapter Manufacturer Firstcom Description Erhalten Sie 2 USB Anschlüsse über ihren ExpressCard34 Slot Features 2x USB

oldest slot machine 1225 Winter Wonderland in Hyde Park London is EXPENSIVE But the rides are pretty awesome! TIPS ✨Get the first entry slot 34 Likes, TikTok The ExpressCard34 expansion slot is 34 mm wide and 75 mm long, and is not backwards compatible with Type I or II PC Cards, which are 54 mm wide and mm