You may have other HSAs, in addition to your Fidelity personal HSA, such as one offered by your employer. If so, it's simple to transfer some or all of your money between HSAs to consolidate them or to take advantage of Fidelity's added HSA investing options and guidance.
Your guide to transferring assets to Fidelity
* Please keep in mind that all of your contributions to all of your HSAs will count together toward the IRS's annual contribution limits. Having more than one HSA does not increase your annual contribution limits.