This is the most ridiculous thing i have ever seen - Garmin web site states that this model number is the correct accessory for Etrex Venture CX GPS. Well, it is not even close. Micro SD slot under the original cover on Etrex Venture CX is preventing the cover from this windshield mount to fit. You would think that SOEMONE form Garmin would test this BEFORE they include it as an accessory that should fit CX Venture, but we were wrong. Perhaps Garmin just does not have enough smart people, because you really need to be a rocket scientist to see the difference between the two battery covers.