Power of Attorney for WU CHUNG-HSIEN

This filing is an Exhibit 24, a Power of Attorney, appointing LIU, CHITUNG as the attorney-in-fact for WU CHUNG-HSIEN, who is the CISO & SVP of United Microelectronics Corporation. The power of attorney authorizes the attorney-in-fact to execute and file Forms 3, 4, or 5, and any amendments, with the SEC and stock exchanges regarding transactions in the Company's securities. This authorization is necessary for WU CHUNG-HSIEN to comply with Section 16(a) of the Securities Exchange Act of 1934. The power of attorney remains in effect until WU CHUNG-HSIEN is no longer required to file such forms or until it is revoked. The filing also details WU CHUNG-HSIEN's direct ownership of 3,685,584 common shares and indirect ownership of 304 common shares by spouse, with a footnote indicating 1,127,500 Restricted Stock Awards (RSA) that vest annually from 2026 to 2029.