It took 4 days for H4 to change.
H4EAD card shows -- Card Was Mailed To Me
On August 13, 2019, we mailed your new card for your Form I-765, Application for Employment Authorization, Receipt Number WAC19191XXXXX, to the address you gave us. If you do not receive your card by August 28, 2019, please go to www.uscis.gov/e-request to request that we send your new card to you.