> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/drift-labs/protocol-v2/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect and Deposit

> Connect to Drift and deposit collateral

This example shows how to initialize Drift Client, connect your wallet, and deposit collateral.

## Complete Example

```typescript connect-deposit.ts theme={null}
import { Connection, Keypair, PublicKey } from '@solana/web3.js';
import { Wallet } from '@coral-xyz/anchor';
import { getAssociatedTokenAddress } from '@solana/spl-token';
import {
  DriftClient,
  initialize,
  BulkAccountLoader,
  QUOTE_PRECISION,
  BN,
} from '@drift-labs/sdk';

async function connectAndDeposit() {
  // 1. Initialize config
  const sdkConfig = initialize({ env: 'devnet' });

  // 2. Set up connection
  const connection = new Connection(
    process.env.RPC_URL || 'https://api.devnet.solana.com',
    'confirmed'
  );

  // 3. Load wallet
  const keypair = Keypair.fromSecretKey(
    Uint8Array.from(JSON.parse(process.env.PRIVATE_KEY!))
  );
  const wallet = new Wallet(keypair);

  console.log('Wallet:', wallet.publicKey.toBase58());

  // 4. Create account loader
  const bulkAccountLoader = new BulkAccountLoader(
    connection,
    'confirmed',
    1000
  );

  // 5. Initialize DriftClient
  const driftClient = new DriftClient({
    connection,
    wallet,
    programID: new PublicKey(sdkConfig.DRIFT_PROGRAM_ID),
    accountSubscription: {
      type: 'polling',
      accountLoader: bulkAccountLoader,
    },
  });

  await driftClient.subscribe();
  console.log('DriftClient initialized');

  // 6. Check if user account exists
  const userAccountPublicKey = await driftClient.getUserAccountPublicKey();
  const accountInfo = await connection.getAccountInfo(userAccountPublicKey);
  const userAccountExists = accountInfo !== null;

  // 7. Deposit collateral
  if (!userAccountExists) {
    console.log('Creating user account and depositing...');
    
    // Deposit $1000 USDC
    const depositAmount = new BN(1000).mul(QUOTE_PRECISION);
    
    const usdcMint = new PublicKey(sdkConfig.USDC_MINT_ADDRESS);
    const userUsdcAccount = await getAssociatedTokenAddress(
      usdcMint,
      wallet.publicKey
    );

    const txSig = await driftClient.initializeUserAccountAndDepositCollateral(
      depositAmount,
      userUsdcAccount,
      0, // USDC market index
      0, // sub-account ID
    );

    console.log('Account created and funded:', txSig);
  } else {
    console.log('User account exists');
    
    // Just deposit more
    const depositAmount = new BN(100).mul(QUOTE_PRECISION);
    
    const usdcMint = new PublicKey(sdkConfig.USDC_MINT_ADDRESS);
    const userUsdcAccount = await getAssociatedTokenAddress(
      usdcMint,
      wallet.publicKey
    );

    const txSig = await driftClient.deposit(
      depositAmount,
      0, // USDC market index
      userUsdcAccount
    );

    console.log('Deposited $100 USDC:', txSig);
  }

  console.log('Ready to trade!');
}

connectAndDeposit().catch(console.error);
```

## Step-by-Step

<Steps>
  <Step title="Initialize SDK Config">
    ```typescript theme={null}
    const sdkConfig = initialize({ env: 'devnet' });
    ```

    Gets the correct program IDs and addresses for the environment.
  </Step>

  <Step title="Create Connection">
    ```typescript theme={null}
    const connection = new Connection(rpcUrl, 'confirmed');
    ```

    Connects to Solana RPC.
  </Step>

  <Step title="Initialize DriftClient">
    ```typescript theme={null}
    const driftClient = new DriftClient({
      connection,
      wallet,
      programID,
      accountSubscription: { type: 'polling', accountLoader },
    });
    await driftClient.subscribe();
    ```
  </Step>

  <Step title="Deposit Collateral">
    ```typescript theme={null}
    await driftClient.initializeUserAccountAndDepositCollateral(
      amount,
      tokenAccount,
      marketIndex,
      subAccountId
    );
    ```

    Creates account and deposits in one transaction.
  </Step>
</Steps>

## Next Steps

<CardGroup cols={2}>
  <Card title="Place Order" href="/examples/place-market-order">
    Place your first order
  </Card>

  <Card title="Account Management" href="/guides/account-management">
    Learn more about accounts
  </Card>
</CardGroup>