I have a credit card account with two different card numbers. I have successfully connected the primary card to QB, but how do I connect the second card?

You can connect your second credit card using the Link account option on the Banking page, Stephkpatt. Let me provide more information as well as the steps below.

First, please note that it is important to know how your bank sends the transaction data. If all transactions are downloaded into one account, link the parent account. If the transactions are separate for each account, link the subaccounts instead of the parent account. Here's how:

1. Go to Transactions, then Bank transactions.
2. Click the Link account.
   
   
3. Enter the URL or name of your bank in the Search field, then click the bank.
   
   
4. Type in your credentials in the Login and Password fields, then click Continue.
   
   
5. Select the two accounts you want to connect and choose the type of account from the Account type drop-down list.
6. Set the date to pull transactions, then click Connect.
   
   

For more details you can refer to this article on how to link you credit card: Connect bank and credit card accounts to QuickBooks Online.

On the other hand, here's an article to help you manage bank transactions in QBO: Categorize online bank transactions in QuickBooks Online.

If you need assistance managing your transactions, you can explore our QuickBooks Live Expert Assisted service. They're a group of experienced experts ready to help you smooth out your financial operations that fit your business needs.

Please don't hesitate to revisit this thread if you have additional questions about connecting your credit card. The Community team is always here to help you.